You would only see the benefits of upgraded calipers on the track (not drag strip) where you will have less brake fade and yes, better pedal modulation when they start to get hot. So if you don't track your car, don't bother.

txhatch, those pads are good for track use (which we determined the OP is not doing), so for DD use they're going to be overkill. I was upset at the reduction in initial bite when I went from Axxis Ultimates to Hawk HPSs, and the HP+ is a step above the HPSs in terms of temperature resistance and high-temp performance, so it'll be even worse.

OP, I'd highly recommend the Axxis Ultimates. They're cheap and will perform very well for your non-competitive driving habits. I ran a set of those on my car and they were awesome even for spirited driving, and because they had great cold bite, they were comfortable around town and performed well at autocrosses (where you dont have any room to heat your brakes up a little). The only reason I upgraded to the Hawk HPSs was because I was in fact able to overheat the Ultimates, but that was with some very hard driving. Going with Hawk HPS or HP+ or Cobalt Friction GT will cost more and be way more than necessary for your purposes, making cold braking noticeably worse.