I nearly bought a MB Fusion today; have also considered other micros to include GK MB500/800, Carvin BX500 /1500, Ampeg PF500, as well as lightweight power amps like Carvin, Peavey, etc. I spent a few hours searching reliability on TB today. I have been a player for many years and have gigged with the following amps: Acoustic 450 & 370 Ampeg SVT, V4B, 3Pro, SVP-CL/SVP1500, B-15, B-15T Fender Basman & Showman Kustom 100 & 200 Marshall (transistor amp) SWR-SM400 At the risk of being cursed, I have NEVER had an amp go down at a gig, rehearsal, or audition. Of course the above are either tube or old fashioned power output sections. Statistically I am certain I've played under low voltage conditions. Understood that new designs will have teething issues. I want light weight but will not trade off for reliability at this time. 2 questions: Can I assume reliability will increase with micro amps as time goes on? Is there a micro amp that has proven to be more reliable based on the same sales volume? Realize this would be hard to quantify but wonder if some of the boutique manufacturers have spent more time & money on either better designs or more beta testing. Please don't turn this into a popularity contest or amp bashing thread. I think the above is a fair question assuming there is data available to support an accurate answer. I suppose that the trade off for lightweight could be reliability based on current technology.