Kevin ... Mike no doubt will answer for himself, but I can and will respond since I have owned ARC gear for many years and have *NEVER* had a serious problem. It is my experience that ARC has always been extremely responsive in responding to any technical issues and concerns that I had.
For example ... when my VS-115 blew some bias resisters, Kal (the ARC customer service rep) put me in contact with a local authorized tech who made house calls!! The first repair was under warranty and ARC honored it even though I couldn't find the receipt. Reason - because Kal knew me and remembered that he sold me the amp through an authorized dealer.
Kal or Len (his predecessor) patiently explained differences in various ARC equipment when I was interested in upgrading. This occurred with respect to every piece of equipment I own. In addition, Kal kept me apprised of when the factory was ready to update my Ref 5 to the "SE" version and efficiently got my unit through the factory.
Kal and Len were always helpful in answering technical questions about hooking up my equipment. Take a look at my posts about an impedance loading issue affecting my Ref 3 and 5. I had to buy a custom buffer from a gent by the name of Tom Tutay. Look up his name and you will see what happened.
Most recently, and then I'm done, Kal spent inordinate amounts of time with me when I was trying to understand impedance matching my amp and speakers. No need to rehash all of that again. Suffice to say, Kal was always extremely patient.
ARC has been around for over 40 years. Until just a few years ago, it was owned by the late William Z. Johnson who was a considered to be a pioneer and legend in the audio business. I won't tell you that every piece of ARC gear made was a winner over the last 40+ years, but way more often than not, ARC gear was at the very top of the audio food chain.
Not to say that there aren't many other fine brands. There are. But hopefully Kevin, you are a believer.
Cheers,
Bruce