I've had a Grand Power K100 with multiple backstraps. I hard a very hard time with accuracy compared to other guns I've shot. Also none of the backstraps gave me a secure firm grip. Easiest to shoot accurate out of box is CZ no contest for me.
Another vote for grand power.....my gp6 is great, and probably the best SA trigger I've ever shot.....wish someone would post a full strip video, I've never managed to figure it out....done around 4000 rounds, and yet to clean the trigger group..


















































