Bryston By Far. I've owned various Bryston gear for years and have never had a problem. They make pro equipment for recording studios so that says a lot right there. Also, anyone who gives a 20 year warranty on their stuff must be pretty confident in its reliability. 20 years transferable while most other manufacturers give 5 years (and they still make excuses by requiring original receipts or restricting coverage to the first buyer only). Off topic but the Bryston stuff sounds incredible. Transparent is the word that is often used by Bryston owners. It really doesn't get much better than this. 20 years folks.
Most reliable equipment manufacturers
I would like to know people's opinions as to which are the mist reliable manufacturers. In my book, reliability means: first and foremost, reliable and continued performance of the equipment over an extended period of time, but it also includes quality of workmanship, manuals/ease of use/design, shipping materials, upgradeability, customer service, choice of dealers, etc. For instance, in my experience I give Thiel an A rating, Sony a C.