Well, I decided to go with the Mesa. I pick it up tomorrow. I know I like the tone and I think it might be a better built amp. The Eden is made over seas. Thank you for everyone’s input.
I'm sure you will enjoy it @Dirthill. Mesa amps and cabs are very well made and reliable. If you haven't had tube amps before, they do need to be treated differently than a solid state amp which you just turn on and go. Of primary importance is the rule that you need to ALWAYS be sure you have your speaker cab plugged in before turning on the amp. Unless there is a dummy load included in the design, you can damage the amp by trying to play through it without the speaker cab plugged in. Also tubes do wear out but normally not very quickly. Preamp tubes seem to last the longest because they are not working as hard as the power tubes are. Never presume a tube is bad. Always test it if tubes are suspect. Otherwise you will sink a bunch of money into tube replacements when the tubes may not even be the problem. I would expect that you will get good service out of it as long as it doesn't already have some hidden problems, which is always a possibility when buying used gear. And even if you do, I'm sure @agedhorse can provide some help or direction. We are really lucky to have him active here on Talkbass.
Regarding the build quality of Eden amps, they are known for not only their great sound but also their durability. When the Eden forum was still around there was even a section on it for horror stories about accidents and abuse that Eden amps survived. One of those was about an Eden WT800 that fell out of the back of the roadie's truck and got run over by the trailing vehicle. Besides the scratches and a few dents in the chassis, it performed fine at the concert that night. Another one was pulled out of a house that burned down but the amp still worked. Those were probably the two most extreme examples, but they are very durable.
Eden did actually have a problem for a few months in about 2010 or 2011. Suddenly a whole lot of Eden amps were dead on arrival. Come to find out they had moved their production facility and a lot of their technicians did not move with them. It seemed like their Quality Control department was entirely missing and customer service was replacing a lot of gear. That's when the move to manufacture them in China was made. Delivery of Eden gear became slow after that as they double checked every amp going out the door until the made-in-China models started arriving in the states.
Eden had been manufacturing their Nemesis series of amps at the Chinese factory for about 10 or 15-years by that point and we virtually never were contacted on the Eden Forum with a problem with the Nemesis amps. So they had a factory that was already used to making Eden gear to the design specs and skilled technicians doing the work with excellent quality control. So they were handed the line of WT and WTX amps to make there, along with the Nemesis line. As soon as those "Made in China" amps started showing up in the states, the defect and dead-on-arrival problems totally disappeared. Eden amps have been manufactured at that factory ever since. I don't believe they ever made the tube amps though and the few I've actually seen do not have "made in China" on them. If it is the E-300T amp I know it was not made in China. The E300T amp was only made in 2008 a couple of years before the manufacturing move to China, so there's no chance that was made in China. The same amp was made with a different name, WTB300V for 3 more years, and it's possible that last year it was made. I just don't recall and that amp disappeared about the time the amp manufacturing move to China was made.
In any case the "Made in China" stamp on the back of Eden gear, it is actually a sign of quality that may seem counter-intuitive to you. I worked for a fly-fishing company for 27-years and I recall when they moved their reel making shop from England to China along with a number of technicians to work with and advise them for a year and a half. They had some hiccups of course but the company that bought the reel manufacturing had a reputation of being the best aluminum anodizers in the world. And, sure enough, when the CNC machined reels came back to us, the anodized finish was better the one that had been made when the factory was in England. I knew the reels would be fine because we shipped them the machines and programs that produce them, but the anodization was definitely a step up. The end result was the "made in China" reels were better than the ones we made in England.
So just because it says "made in China" on the back doesn't necessarily mean it's lower quality. The trick is you have to have regular follow up with the factory at least a couple of times a year to make sure everything is proceeding as planned and no substitutions of parts or methods are being made. I think it was Lane Baldwin who made those trips to China for Eden, but whoever it was, they kept them producing top quality amps.
So, if I were to buy an Eden WT amp from that time period and I could choose between the Made in China and the Made in Mundelein (Chicago area) one, I absolutely would choose the made in China one. My Eden TN226 (225-watts into 4Ω) is a made-in-China amp and it is probably the most used amp I actually have because the group I played with typically hosted this small brewpub's Open Mic Night over 40 Friday nights a year. It's a sweet (and light) little amp but it's my small venue rig and I don't use it anywhere but small venues.
Rock on!