I have zero personal experience with Glocks. From what I have read, unmodified ones are about as reliable as a hammer. However, I have witnessed failures with examples whose owners had installed aftermarket parts.
Thirty years ago, I bought a Colt Gold Cup. Out of the box, it was reliable with everything but semi-wadcutters. Cylinder and Slide fixed that for me. As long as I clean and lubricate the gun every couple hundred rounds, it's 100% reliable.
From what I have read, 1911 reliability varies from brand to brand. Rock Island and Springfield are supposed to be good; Kimbers not so much. Some expensive, custom guns don't do very well, either. Small 1911s, with short barrels, are notoriously unreliable. You should stick to a full sized model or a Commander. The weight of steel guns makes them pleasant to shoot.
Cylinder and Slide has a good reputation. Since they don't post prices on the web site, I don't know how much they want for a basic 1911 with a good trigger and sights and just enough tweaking to make it reliable.
What is your purpose for a new gun? If it's just to have a .45 for fun, a 1911 strikes me as more rewarding than a Glock. If your purpose is self defense, consider something in 9 mm. The best current thinking is that, with the possible exception of .357 mag and .357 Sig, there is no significant difference between the popular self defense calibers. Long ago, when a solid slug with a round nose was the only ammunition available, .45 was more effective than .38. Modern hollow point ammunition makes shot placement and multiple hits more important than caliber. With 9 mm, you get more rounds in the same sized package and faster repeat shots because of lower recoil.