I have the Minolta Dimage G500 which is the 5.0 Megapixel camera, but I think XT and X20 are very good cameras. I would go with the XT over the X20, though, since there is not that much difference in price. I seriously considered the XT when I bought mine. The XT has the advantage of being slimmer(not as thick) and lighter. The G500 is a little more versatile and the enlarged playback feature is a lot of fun. That means you can bring up any one of your pics that you took on the screen, then zoom in on the person's face or on something in the landscape. It is fun when you are showing pics to the BGs. Also it has more storage capacity.
Basically, XT and X20 are shirtpocket size, and G500 is pantspocket size.The difference in length and width is almost negligible. Since I bought mine 4 months ago, Minolta has come out with the G600, a 6.0 megapixel camera, basically the same as the G500, but with the advantage of another 1.0 megapixels. That has really bought the price down on the G500 and it is a lot cheaper than when I bought it. A very good buy.
I also have a Minolta SLR and have been happy with it!
