Ok I know that this is totally an opinion thing but I have a question. I have made up my mind that my next gun purchase will be a Glock in .45 caliber. Now I already have a 19 and a 23 and I think I want a 30 but should I go with the 30 or 30SF? I don't have a place that has either of these models in stock so it would be a special order that I am pretty much locked into and I don't know which to order. I have handled the Gen4 21 and I almost bought that model since I already have the other two to use for concealed carry but I just know that once I start shooting the .45 caliber I will probably want to carry it too so the 30 might be better. Any and all opinions appreciated. Thanks.