Have heard the .40 is more of a bear to shoot than the 45. Am trying to learn what I can learn off forums like this, so I ask. The nearest store that carries these weapons (not all, but some) is a 150 mile round trip.
The .40 is not bad to shoot, the recoil is no worse than a 45 but just feels different. The 9mm is pretty gentle in the G19 as far as recoil goes and it does get you 15+1 rounds the same as the full size G22 for .40. I have not tried shooting the subcompact models, but they don't seem to fit my hand as well as the compact or full size models.