I had an R3A and liked it a lot. The shutter isn't the quietest, but if the camera's in a half case it's muffled quite a bit. Unfortunately, you can't use a half case w/ a side grip, and I found the grip to be essential. It makes the camera a lot easier to hold, and has a strap lug on it so you don't have the camera's lens digging into your back, which you WILL have w/o the grip.
The view in the viewfinder is clear and bright, but the RF patch isn't as contrasty as an M3, but then what is? I liked the AE feature a lot, and w/ the little AE Lock button it's super fast to adjust for different lighting conditions. Got a back lit subject? Just point the camera at the ground or some other area of middle value, lock the exposure, re focus and shoot. The shutter speeds in the finder white out in any sort of bright (or even not so bright) light, but after a while you know that at a certain aperture your shutter speeds are going to be within a certain range, so you can just wing it. They're great cameras for the price, and do 90% of what an M7 can do at 1/3 the price of a used M7. Just don't confuse the build quality w/ a Leica. You pay a premium for a hand assembled German camera, and get what you pay for.