what pistol manufacturer would you recommend then? Glock? Sig Sauer? I kinda want a Colt .45 to just for nostalgia purposes
Go to a range that rents them a go with the brand/model that you shoot best with. Longer barrels tend to be a little more "accurate" due to their longer sight radiuses. I'm a fan of .45 but a 9mm will serve you just as well as long as you feed it with quality hollow point ammunition. I'm not a fan of .40 personally unless it's in a heavier gun due to it's snappier recoil. Honestly pistols are sidearms though, a gun to get you to your real gun, go with a rifle if you plan on going to the range a lot or a shotty if you're looking for mainly home protection.