I use a Konica Hexar RF and a Leica M3. I also have a bunch of other cameras but don't use them but a fraction of the time, including a Contax system that I think is the best SLR system there is. At least 90% of the images I make on 35mm are on the rangefinders these days.
Personally I think the Zeiss Ikon is the best rangefinder made, although I don't use one. I would happily trade the Hexar RF for one. The viewfinder on it is extraordinary. It is worth a look if you want to go with a rangefinder. Second for me is the MP. My opinion has nothing to do with the price. I think the Leica is better from a manufacturing standpoint, but one look through the Zeiss Ikon finder and you might just buy one.