I own one of these and it really helps to know what year on some of them I hear however I've owned one and can't bring myself to let it go unless I got another one :-D. I actually prefer it over the titan's, I have the mesa stock tubes but I met a guy who had some groovetubes and it gave it a little more punch although lost some depth. It was still sweet. Also, check out that les claypool awakening solo on youtube, he's got one
+1, someone buy this. I got mine for $10 less but without the tubes and in an old 4 space SKB case. The badge is blue instead of red and I hear that means it's pretty old. Anyways, this is a decent price, not high, not low and this thing will not depreciate! Especially since it's out of production now

RIP.
If I didn't have one I'd swipe yours, if I had the need for two of them I'd SO do it. I can't justify it though, lol. It'd be too awesome for me to handle too. I use mine in an older Eden D410t and I'm trying to get an XLT but after you get your eq set (it takes a moment to learn if you've never messed with mesa), it's punchy, warm and if you have a bass that growls mmm. Like buttery biscuits on Tal Wilkenfeld's back. Whoever buys this just try to get a good cab otherwise you'll be missing out.