I prefer the Custom version and wound up getting one. The only downside is one of the benefits-the sights. The rear sight is pretty tall and finding holsters for it is a bit of a chore. I wound up rounding the rear part of the rear sight with my dremel as I have a generic mesh type holster and it always gets caught on the holster when I draw it due to it's square edges. I would not recommend a Custom for pocket carry for this same reason-too many problems with getting it snagged on the way out of your pocket when needed, unless you round the rear sight and the front one. I hope other manufacturers will make different sights for it, like a tru-glo, etc.. The factory front is photo-luminescent and will glow in the dark for a limited time when exposed to light, which I don't see the benefit of. If you are going to be using this at night/dusk/dark places, the factory sight will need to be charged by either a flashlight or another form of light. So, if you are using it for self defense, you will give away your position trying to charge it. I don't know why Ruger used this type of sight other than for target practice as it does not serve a real purpose. I was going to get a Hi-Viz sight for it like on my G19,(was going to use a Glock sight but a little sanding/grinding is necessary to get it to fit in the hole in the front). The front sight on mine wound up coming loose and falling off after 100 rounds. .No biggy, I just put some loc-tite on it and it has been fine. The pistol has more ability to be accurate due to the sights compared to the point and shoot sights on the standard model.
The larger/wider red trigger is much better than the standard model, as I had one of those and it was not comfortable to shoot. The finger extension on the magazine is nice for getting a bit more of a grip on it than the standard 2 fingers. I bought an after market finger extension for the mag., as it was a little bigger/longer than the factory one, but it was the wrong height for the magwell and would not allow the magazine to seat, so I wound up returning it to my dealer. I can't remember the manufacturer but I think it was Pearce.
Even with some of the issues I had, it is still a much better model than the standard.