For a semi-auto I'd suggest a Beretta 92FS, M-9, or M-9A1, all of which can be had in your price range. Ammo is available and is reasonable compared to other calibers. 9mm rounds like the Glaser PowerBall are genuinely effective rounds as are CorBon choices, Speer Gold Dot, and Federal HydraShok.
Range ammo is great from Winchester, Remington UMC, and Blazer Brass. The weight of the 92FS is a contributor to it's performance and tolerance for recoil. Very little muzzle jump and repeatable sub 1 1/2" double taps are achievable fairly early on shooting a good bit. From your description of the smaller grip on the Glocks you tried, you will have no trouble with the size of the Beretta grip. Before you choose any handgun go to a range that rents and try several. Everyone is different and handguns are personal weapons that require a great deal of attention to shoot well. Enjoy, shoot well and often.