Honestlly the 5 round mag on the xds is great for carrying but not what you really want for a combat situation. It's like having a revolver, the 7 round is fine but you then have almost a full sixe gun, so the shield in 40 gives me 8 rounds and it's still hideable. If there was a 6 round mag for the xds, it would be a better carry option. so I just carry both, teh xds with the 6 round as a backup to teh shield with 8., It's amazing how 2 rounds just make it too long in the mag area. Maybe the 9 mm is a good choice, but too many people have been walking away from shootings where they were shot with a 9.
I makes me think I need an an edge, the 165 grain hornaday is defunatelly a harder hitting bullett than a 9mm.
I fully agree with the comfort of a 45 vs a 40, I had sworn off them like 6 times in 4 decades.