There are all kinds of quality 1911's out there. We all have our favorites. I'm a Springfield and Para Ordinance fan. With 1911's. If you are going to use the pistol to compete don't try to save a lot of money. Really good 1911's are not cheap. And you are not going to be looking at an "entry level" 1911. You get what you pay for. Look at them all. With the weapons slide closed you can check the barrel by trying to move it inside of the barrel bushing and at the chamber end. It shouldn't have much if any play. Also the slide to frame fit. The rear of the weapon you can try and wiggle the back end of the slide to see if it moves any. These little wiggles might seem small but remember a little play at ground zero will multiply over distance. The slide should not have a bunch of wiggle but it also should not be too tight where the slide will not move smooth across the frame while the slide is moving back. The recoil spring should be the only real resistance.
Trigger is never over 5# pull and if it's going to be a comp gun you are looking for less than that.
Most all the big names make a good 1911. Colt, Springfield, Para, Kimber S&W, STI, all make really good ones. RIA, Taurus make good 1911's though I'm not sure how they would do in competition. I've had both but never used them under those conditions. There's more but my brain is not working well enough today to think of them all off the top today