If weight is an issue as it is with me, severe back problems ongoing, I have ribs that actually broke off and fused to the spine", then go with the 10 rounder, and carry 1 or 2, 15 round reloads, That's what I do with my 26. There is a big difference if you have a very bad spinal condition, I have no disks that are not in some way damaged, and even a belt causes a problem after a few hours. I found some things you can do like a good iwb with a strong clip will stay on even pants that do not have a belt. I modified a couple of holsters to make sure that they aren't coming out with the weapon.And worse case you can underload if you have severe pain, or pick up a keltek pf-9, and use the 115 jhp's. That pistol is really about 2/3 or less of the weight of my glock. It's better than stepping down in caliber in my opinion. After 4 decades of carrying, there is always a way to get around things. I can feel the difference in 147 grain and 115 grain in my keltek, "that's how sensitive it can get sometimes". So if I resort to that pistol, I just go with the 115's and carry a spare mag in my pocket or and ankle strap, there is always a way. But seriouslly there isn't a reason to lighten the pistol unless you really have to.