I've used RA for filters (air & cabin), but haven't needed to use them for much else.
My brother brought a Civic back from the brink using parts from them.
I have heard of others having problems with them, but those are far and few between.
I use RA as well. Most of the time if I can wait or have a weekend repair planned I'll price shop between the local parts stores, online Honda stores and RA. Most of the time they win and as Rocky stated, I too always go for the highest quality part they have. Living out in the country with a 40 mile round trip to a parts store makes RA a good deal for me. Can't beat ordering on a Tuesday and the parts are there on Thursday.
If I need a part right now, I'll use Auto Zone, Advanced or Orielly's and in a pinch Napa. Find who has the best prices, items in stock and then make the trip in to town.
I was leery at first, but after a few purchases I'm a fan. Of course, it depends upon whether or not you can wait for the parts.
Scheduled maintenance, replacing wiper blades on the fleet, upcoming brake jobs, that sort of thing. Gotta have it now, still
stuck with Autozone or NAPA. (or even the stealer).