Camera criteria

I mentioned in an earlier post that I'm interested in purchasing a new camera in the not-too-distant (but by no means near) future. While considering my options, I want to keep several criteria in mind.

• Weight. My current camera is much too heavy to be comfortable carrying around for any length of time.
• Size. A light-weight camera is nice, but only part of the equation. Pentax seems to be making pancake prime lenses that would make carrying around a small camera that much easier.
• Size, the counter-argument. Many of the entry-level SLRs are too small, or at least their grips are uncomfortably small. Plus, a very small SLR is unwieldy with very large lenses.
• Image quality. There are two factors of particular concern to me: image size (aka megapixels) and high ISO performance. Anything 10 megapixels or higher should be fine (although don't think I'm not drooling about the new 20 megapixel cameras), but quality at ISO 3200 and higher is of greater importance, and to some degree will be inversely proportional to the number of megapixels.
• Viewfinder quality. I gave up on my Canon 300D because I was tired of looking at the scene through a tunnel. Give me a large, bright viewfinder, or I'll stick with my 1D.
• Responsiveness. I don't need 8 frames/second, like my 1D has, but my 300D with a very slow boot time and impossible lag after filling the buffer was difficult to tolerate. 3 fps with at least a 10 image (RAW) buffer would be sufficient, I think, although I'd miss my 1D's speed a little.
• RAW is a must; DNG output would be nice, but not essential. (Having said that, Adobe's DNG converter must be able to handle the camera's native files.)
  
• Lens cost. I don't want to buy a camera only to discover that the lenses I want are unreasonably expensive. Canon's lenses, while quite pricey, will likely be my primary point of comparison.
• Interchangeable lenses. I'd like a pocket camera to have handy at all times, but my primary camera must be an SLR, rangefinder, or perhaps one of the new Micro Four Thirds SLR-like cameras. (My iPhone is a serviceable pocket camera, albeit limited.)
• Battery life. I'll have to research the SLRs driven by AAA batteries carefully; that doesn't seem like a recipe for long battery life.
• Image stabilization. While I appreciate the advantages of lens-driven image stabilization, I'd like to have it in the body as well.
  

Note to self: do not buy a camera without handling it first. Thank goodness for Roberts.