There is a lot more slide work and detail on the Raptor series as well. The other thing is, the Raptor series have a much nicer finish than the Tactical series pistols that Kimber offers. That should lead you to a few different questions to ask yourself, what are you going to do with this pistol and how much do cosmetics mean to you? If you are going to carry the pistol, the tactical would be my choice! If you want a range toy the Raptor is your choice. If you want something to pull out when friends are over, and them to say... wow, thats a gorgeous pistol, again the Raptor is your choice.
I would say that the Tact is more of a tool and meant to be carried! Aluminum frame and rougher finish... meaning more durable for your holster.
In the big picture the scallops on the frame, the brushed finish stainless frame, and brushed/high polished blue finish on the slide will make the price on the Raptor higher than what the Tactical series is.
I have owned a Tac Pro and I sold it because I prefer an all metal frame. I still do own my Grand Raptor, and thats not going anywhere for a while. I own a few shitty plastic pistols for my carry guns (Glock and M&P).
Before anyone here goes to goofy, it's not that I think that those guns are better than the 1911. Its the fact that if I ever have to use my pistol for personal protection, I do not want the police confiscating a $1200+ Kimber or any of my 1911's. I can live with them taking my $450 Glock or M&P... just some food for thought