Holy Cow ^^^ @Jeff Genzler himself!! Man I love Talkbass! I am following this thread with great interest! I have been playing SWR for the past 20 years, specifically the Pre-Fender redface Bass 350. I still have, love and gig the 350, but have experienced recent reliability and headroom issues. After much research of what was and is available as an upgrade, I purchased a "Very Good" condition Genz Benz Shuttle 9.0 which I will have by Tuesday of next week. I have actually never played one, and can say that I am both excited and terrified. I wasn't ready to make the jump to Genzler, but considered it strongly. I love the simplicity of the Shuttle Series and really wanted that 12AX7 tube preamp, similar to my trusty SWR.
Overall, I considered Genzler, Genz Benz, Markbass, Bergantino, Epifani, Tecamp, DNA and briefly Mesa. I hope I made the right call, but won't know till I hear it? I can say, even though I haven't even received the amp yet, I have no regrets. No matter what I bought, it was going to be used, b/c of my budget...I guess we'll see how it pans out. The timing of this thread is very ironic, and TB has been a wealth of info in this process! I guess I have a soft spot for revolutionary amp builders that get bought out and eventually shut down by Fender.