...to replace my aging Canon A650 IS camera:
A650 IS specs at Canon
G12 specs at Canon
D10 specs at Canon
ABCDeals refurbished A650 $450
Refurbished A650 "from China" $290
A650 at Amazon, varied prices
G12 at Amazon $430
I really like my A650 IS, I have had it cleaned or fixed once (dust or spots internally on the lens or mirror, a glitch that somehow develops during airline flights). It's a great camera that has already survived one E18 or "Lens error, restart camera" event, which I fixed by carefully whacking the camera, as per the percussion advice on some forum (maybe this one; other options were send in for repair or take the camera apart and mess around). I'm now facing a growing spot of no pixels on the vari-angle LCD screen (vari-angle is a higher requirement for me than AA batts). I'm sure Canon can fix this, but I don't know at what cost (yet). In the meantime, before I send my camera off, I'll need another camera (though I could pull out my old A620, like I did in the spring of 2010 when I last had the A650 in for repair). eBay currently has A650's that generally sound no better than the one I already have.
A note: Xmas always comes early when I buy something like this for myself.
UPDATE 20Nov2011: Nikon Coolpix P7100 review
UPDATE 28Jan2012: Just ordered a Canon G12. This option retains the vari-angle LCD screen, adds slight weight and height, aperture drops from max 4.8 to 4.5, total zoom drops from about 210 mm to 140 mm, wide angle increases from about 35 mm to 28mm, megapixels drop from 12 to 10, have to use Canon battery packs, gain High Dynamic Range shooting.