so for commuting, its better not to get mountain bikes and stick with ones that has light weight frames n think wheels, wat's the correct terminology for them neway? is it easier/faster riding on them than the ones i wanted to get? n how is it "more fun" to ride on those better bikes u suggested?

Edit: oh yes, where can i find good locks in toronto? i mean, i dont think the ones in walmart or canadian tires will do. and wat are their price ranges? thanx again