while its true that the 350D doesnt have live view, there are other ways to get better focus, maybe something like a bahtinov mask would help, or for $60 you can buy an angled viewfinder for your camera, that can be switched between 1x and 2.5x
loads of people achieve great results with a 350D, its just practice.
but to my mind, if you wanted to spend something, i dont see the point in somethign dedicated for ocassional use, and if i already had a DSLR, then i would be looking at buying a CCD imager, although thats only if its for far more than the odd snap.