I have had a 40sc and a 45 tactical, so take this with a grain of salt.
The tactical shoots wonderfully with very little recoil, basically a nice light push. I've heard it compared to catching a lightly tossed baseball bare handed, and agree.
the sc on the other hand can be a handful, the muzzle flip is the only thing that makes it unpleasant, but you definitely know when you're shooting.
I know there is a rather large differnec ein the ballistics and performance of the 2 rounds, but the weight of the tactical seems to make a large difference