A fun thing I've always enjoyed with my cameras, is their ability to take great photos sans flash in situations where everyone around me is scratching their heads in puzzlement.

A lot of that goes down to the optical image stabilization in the lenses I choose, but a lot more goes to shooting at up to ISO 1600.

A newer body would give me 2-4 stops (ISO) more of exposure latitude there, which given the results I'm already getting, would be astounding! Granted that I'm already happy with what I get at 1600, the difference between 3X versus 4X that are pretty much moot.

So perhaps I ought to upgrade. Just need to find the right camera body that's compatible with my (Canon EOS) lenses. Come-on Canon, gimme a great body with onboard flash (or "speedlight" in Canon terminology)!