Howdy, Doc.
My wife and I spent about two years shopping for a digital camera, and finally settled on the Canon S-40. As you're probably aware, the S-xx series are the 'consumer' versions of the pro-oriented G series. The S-40, as it turns out, is about 85% of a G-2. 85% in every way - features, price, and weight. I hasten to add that Canon has not made any compromises regarding picture quality - the S-40 may not have all the exposure or hardware options that the G-2 does, but the pictures themselves are every bit as good.
BTW, a word of warning if you're using a Mac. Apple's iPhoto simply does NOT display imported pictures to best advantage. We started out blaming the camera, but when we took a look at the raw pictures from the camera using Canon's software, we knew we had a winner. Now we use iPhoto for photo management and ordering, and do our viewing in PhotoShop.