For a number of years I had two travel setups, depending on how much equipment I wanted to take... 1.) A FM2 with 105 f2.5 and 35. f2.0. and a Zeiss Ikon Nettar 6x6 folder, meter, flash with sync cord.
2.) FM2 with..., Mamiya C220 65mm lens, 180mm lens. flash..., meter.
Now that I have the rb67... I might have to rethink that.
Ahem. Speaking as a female member of the forums with about 10 different cameras, only 2 tend to go out with me. I get the husband to carry two more that he likes to use too. He gets the SLRs with all the lenses and filters and most of the film. I get a 35mm Finetta 88 and an Ilford Sporti or two and that fits in a little tiny camera bag with a clipflap. Means I always have my camera at hand and I can have quite a lot of choice as far as what films go in what cameras. You have to learn to lighten your brain - stop concentrating on what camera will give you the best shot and realise that you and your brain will produce excellent shots with whatever you have at hand if you let it.
Let go and be free.
I'm also agree with the "less is more" mentality. If you're going to keep dwelling on shots you've missed, you'll never be happy because there'll always be something you won't be able to get.
With that said, I highly recommend something from the Voigtlander Bessa R series. Keep your eye on KEH for good deals. Rangefinderforum has a few good deals going on in their classifieds right now too.
My R2 and CV35/2.5P2 have renewed my interest in 35mm photography all over again.