Just a question why is he so opposed besides the ambi part to glock if I may ask? Lack of a safety, the look, grip? He may shoot that one better than any other like I came to find out after I refused one. But if he really does not want one my choice is the M&P.
I've never owned one, but those do seem to get lots of good reviews.
Something with good resale so he can buy the Glock when he realizes his mistake.
Not gonna lie, trying to get to my 50 post count. That being said, I really like my XD over Glock. It's very much a personal feel, but I prefer the 1911-ish feel over the Glock. Don't disparage either gun though.