QUOTE(TheWandererX @ Jan 20 2010, 09:32 PM)
Not really, the difference is marginal. These two models are both entry-level models. Therefore the difference won't be big, if there is any. Just so you know, the Nikon's algorithm contains sharpening and touch-up elements, so what you see isn't the real deal. It's modified in camera. Definitely the Nikon's output would look better. This is a very subjective question though. So there is no definite answer.
Also, yes, auto focus does play a TINY role. In the Nikon's, their older lenses (example the 50mm 1:1.8D) don't have built in autofocus motors because it was made for film cameras which had no autofocus. The AF motors inside the body is to help the older lenses to focus.
If you're gonna compare the 450D to the A350, definitely the 450D will stand out. I've played with both previously, and even the stats of the 450D outmatch the A350. It's another subjective question, and if I voice out a little too much I'll be accused of fanboyism. So I shall recommend you to go ahead and scour Google, this forum and other forums for your answer.
Good luck on making up your mind.
Actually what define those models are entry level? Would the 450D consider as an entry level as well? After hours of research in other forums, Youtube and friend's recommendation, the choice I have to make more likely come from Canon. But which model would you recommend? The 450D or the 500D?
Would the image taken looks the same? I am not familiar with the 450D and in the previous reply. you did mention that you played with both previously and it should not be an issue to know the pro and cons regarding 450D compare to the 500D

. As I know there are two kits for 500D which are the 18-55 and the 18-200. Obviously 18-55 would be my thought as the beginner lens but what I have in doubt is whether it is easy to use even for a person like me learning about DSLR? 18-200 would not be my pick because it might have CA problem and the it will have slightly soft images compare to the 18-55. Another thing that I am curious is why the 18-200 is way more expensive compare to the 18-55? Just because it provide a better and wider zoom perception?
And thanks again TheWandererX for helping me out a lot.