I have both the SR45 and a XD45 4" Service model with thumb safety. Both required a trip back to the factory when I first got them. The XD's ambi safety levers wouldn't follow each other correctly and had to be replaced. The Ruger's front sight dovetail was cut crooked and the slide wouldn't lock back on an empty mag at times. Ruger replaced the slide and adjusted the slide lock mechanism. When I got it back it still wouldn't lock back on one of the mags, I called Ruger and they sent me one free in the mail. Both customer service departments were excellent to work with. As far as shooting the guns, the XD has been flawless through approx 800 rounds. Excellent accuracy and soft recoil.. The Ruger has has three light strikes through approx 1400 rounds all with PMC ammo, all other ammo has been flawless. Again excellent accuracy and maybe even a little softer recoil than the XD. I put a Hogue Handall slip on rubber grip on the Ruger and I like it better than the thin factory frame grip. The factory grip on the XD fits my hand fine and I haven't had any problem with the grip safety. The Ruger has adjustable rear sights and the XD has fixed sights. The XD has better capacity (13) than the Ruger (10) but for a range gun that doesn't matter much. I also have a Stoeger Cougar 8045 that has been flawless through about 1200 rounds and a S&W M&P Midsize 45 flawless through about 500 rounds. I replaced the M&P's factory trigger with an Apex polymer trigger due to trigger sting. For carry the M&P would be the best, for range use they're all about equal. For the money, the Stoeger was the best buy. If you can, try them for fit before you buy as they all feel different. If I could only keep one and considering accuracy, capacity, feel in hand, it would probably be the XD.