I started out mainly shooting Olympus P&S cameras, and eventually gravitated towards Canon DSLRs. I currently shoot a 20D and 5D, but carrying around both of these bodies with 2-5 L lenses plus a monopod and/or tripod is just simply not an acceptable solution for me most of the time. I've really found myself wanting a high-quality carry-all-the-time camera, or perhaps 2 (one for wideangle, one for telephoto). I still haven't found one that meets my needs yet.
My dream camera has at least an APS-C size sensor, >= 8MP, image stabilization, and must provide RAW capture with acceptable write times and file sizes. It can be a DSLR-like camera in size, doesn't have to be super-compact, but the smaller the better.
Here are the contenders I've looked closely at:
1) Sony DSC-R1 - this is the one that came closest, but its RAW files are so large and write times so slow that I couldn't justify it. I so hope there is an R2 coming.
2) Konica Minolta DiMAGE A200 - poor image quality, noise performace.
3) Nikon Coolpix 8400 and 8800 - small sensor, unusable over ISO100
4) Olympus 8080 - small sensor, unusable over ISO100, Olympus seems to be out of the high-end digicam market now
5) Panasonic Lumix DMC-LX2 and DMC-FZ50 - way too many pixels, unusable over ISO 100, but still very tempting (at least for bright sunny days). I haven't been too impressed with sample photos I've seen on public photo sites, but I have to think many of these were shot as JPEGs.
6) Canon G7 - no RAW, Canon I hate your stinking guts. But I'll keep my 5D.
7) Samsung Pro815 - Interesting, but small sensor and other issues, a successor to this camera could be be appealing
Sigma DP1 - certainly an interesting camera, but as far as I'm concerned it's a 4.7 MP camera. 'Effective Pixels' my butt. I am waiting to see the reviews, though. Might be interesting to use.
Sony is the only one I think might actually give me the camera I want if it puts out an R2. It's strange to think that a consumer electronics company seems to 'get it', while camera companies like Nikon and Canon don't. Canon's decision to remove RAW capture from its P&S line absolutely mystifies (and angers) me. After Sony I'd think the best chance comes from K&M, Panasonic, or Sigma, but each of them has issues. K&M seems distracted with DSLRs and 4/3, Panasonic thinks megapixels is the only thing you can keep improving in a camera, and Sigma has the Foveon albatross around its neck (which I hope pays off for them someday, if they don't go bankrupt or just stop making camera bodies first).
So for now I'm looking forward to the Leica M8. It's expensive and I've never used a rangefinder, but it seems to be the only solution forthcoming for a walk-around camera with good noise performance.