He's a big dude, personal trainer and big gym guy so a pistol that feels good to him will probably be too big for his wife. She works out a lot as well and physically can handle shooting a full size but not sure if the controls would be comfortable. I told them to go around and finger bang as many different ones as they can, get different ideas and theories from gun shops, some will be full retard while others would be spot on. Then pick out like 5 or 6 that felt the best to test fire, not just one mag but mag changes to see what is the easiest. Relatively new shooters so they won't have all the bad habits or theories prior to shooting that can mess you up.
People get all worked up over Glock is better than 1911 or H&K are just over priced junk Blah blah blah...... Comes down to feel and ergonomics. Just like a pair of boots, what fit my feet perfect and I can walk all day in are beyond uncomfortable and useless to another. Firearms are the same way.