The company you choose can have an impact on key factors of your purchase including warranty and tech support.
Slowly but surely the on-line tech support is built up with only the really tough questions requiring a little hand-holding.
I currenty use AOL as my main ISP and their tech support is not just hapless, it is actually a health hazard.
It works quite well, and the company is very responsive for special requests and tech support.
This includes both customer service needs and tech support.