Basically like the title says.
I currently am running some no-name aero road levers I bought from eBay with some very cheap single pivot tektro brakes hooked together with some $5 cable I got from Walmart and some brand new Kool-Stop Thinline brake pads.
After replacing the pads I noticed a fairly significant increase in braking performance but I'm just not getting that nice snappy/responsive feel that nicer bikes have.
I'm just wondering, what part (or parts) contributes to responsiveness/braking performance the most?
I just can't get over that smooth snappy feel of the brakes of better bikes. (is that weird?

)
Thanks for any help.