Thanks for the replies. Considering that I haven't even been able to see and hold a MK40 or a Mk9, I was just happy that the guy told me he could get me one. Unfortunately, the price does not include night sights.
1911: I have been considering the 9mm due to the reason you mentioned. Not real worried about capacity, but this would be a primary carry gun on occassions when I can't strap on my SIG 229. Therefore, I want to be able to put some big holes in the BG. I know the 9mm is effective, I carried a 9 for a lot of years. But I'd rather give up a round and gain some width, so to speak. At the same time, If I hate shooting the MK40, then I probably won't practice much with it, and that's not good either.
Coley