Just a comment...
Don't get hooked into spending extra money on Mega Pixels. David Pogue of the NY Times recently did an "experiment" on photos containing 3 different levels of pixels, and 99% of people can not tell the difference between the three, even when blown up...
http://www.nytimes.com/2007/02/14/t.../Reference/Times Topics/People/P/Pogue, David
Anyway, the point is, Optical Zoom and Lens Quality are much more important in getting a quality picture versus the number of Mega Pixels your camera possesses.
I have a Canon A620, and love it! I like the flip out screen that I can adjust so I can take shots over my head and still see the viewfinder. (Great for the parades when you don't have a front row seat) And it takes really good pictures! I have been a 35mm SLR user for years, but couldn't justify the cost of the Digital SLR. I have not been disappointed. The camera has a lot of manual controls, so you can tweak your photography as much or as little as you want.
No, I can't put it comfortably in my pocket, but I can put it in a fanny pack without issue, which is perfect for me.
As for "delay", I don't find it an issue, if you use the camera properly. Most Digitals (including my Canon) have a "half-press" function on the shutter release to take care of the focusing and metering. If you know you are going to be taking a shot, half press and hold shutter release to get the camera to "read" the focus and exposure settings. Then, when your subject is ready, press the shutter release the rest of the way. If you press the shutter release "all the way" in one movement, the camera still has to go through the metering and focusing, and that's where you get some of the delay. Also, if you are concerned about the delay between taking photos (cycle speed), the biggest contributor to this delay is the speed of your memory card. The memory cards included with the camera have a slow data transfer rate (i.e. "cheap"). So, since the camera has to save each photo to the memory card, the faster the data transfers to the memory card, the sooner you can take your next shot. Bottom line, when you buy a bigger memory card (which you will want to do), make sure it's a fast card.
Here is a terrific web site about digital cameras....
http://www.dpreview.com/
best of luck!