More af pts doesn't mean better especially to people like me who uses the central af pt most of the time. In Digital SLR (or Camera) magazine review, 7D's af is faster and more precise especially in al servo mode. Nikon outshines 7D in ISO but don't forget that Canon's system is more friendly than nikon due to the issue of built in motors etc. Frame burst rate can be important for people who shoot fast action shots, no pt getting a clean high ISO image but a blurred one. I prefer a noisy but sharp image.
So it's back to what TS needs most and which camera suits you better. For me more noise at higher ISO is not that critical to me (using 500D) since I can just convert to B&W with grainy feel kind of picture. I face the same situation whereby I wish I own a 7D or higher model because I am really struggling with the af speed and fps of 500D, but so far it is still possible to get decent pictures with 500D, just harder and I am still using it since I tell myself all I need is 1 or 2 nice pictures out of say 1000 trials to fulfill my goal of the day. So 500D can still meet this level of expectation provided the photographer has the skill to transform an entry level model into something that a semi pro model can do.
**But still waiting for the day when maybe my 500D suddenly dies and I have an excuse to upgrade **
So it's back to what TS needs most and which camera suits you better. For me more noise at higher ISO is not that critical to me (using 500D) since I can just convert to B&W with grainy feel kind of picture. I face the same situation whereby I wish I own a 7D or higher model because I am really struggling with the af speed and fps of 500D, but so far it is still possible to get decent pictures with 500D, just harder and I am still using it since I tell myself all I need is 1 or 2 nice pictures out of say 1000 trials to fulfill my goal of the day. So 500D can still meet this level of expectation provided the photographer has the skill to transform an entry level model into something that a semi pro model can do.
**But still waiting for the day when maybe my 500D suddenly dies and I have an excuse to upgrade **