Unless you're a huge SA fan, I'd go with the GP-100 for the versatility. For self defense the DA capability, and rapid reloading are real pluses. It still makes a good plinker than can be enjoyed in SA or DA mode. I think you might like the GP-100 better in a 4" version tho-------it balances much better than the 6" for most folks. How about a 4" in the GP AND a 6" BH? Best of both worlds!! You will be well served by either one, go with what you want the most, who knows, you may someday end up with both!
Savage