I never knew switching to a Canon "will improve the quality a bit".

but basing my post on TS's post, he/she asked if lenses contribute to good/bad quality photos -> and to this point I definitely have to agree that a better lens (more expensive tho) will give better quality output (not necessarily a 'better' photo).

Then TS said he almost gave up photography until the unveiling of the EOS 60D... I dont see the connection with the question and the solution. Instead of buying a new camera (which you'll end up with the kitlens 'again'), why not invest of good quality glass?

well, this is only my 2 cents. i could be wrong tho.