I carried 1911's for years and switched to Glocks about 7 years ago. Not because I don't like 1911's. I do. They have been, and always will be my favorite pistol.
If you want something that you don't have to worry much about, I would go with the Glock. Great reliability, very accurate (if you can shoot well), very durable too.
Plus you don't have to worry about rust. If you are going to be carrying IWB, thats something to think about.
The Glocks are very easy to work on too. There are a lot of people that say they can work on 1911's ,but there are a lot of them floating around out there that have been ruined or are unreliable because someone that thought they knew what they were doing...
Any time I'm working on a 1911, I go into the garage where there are no distractions.
However, basic cleaning on 1911's is very easy
Find what you are comfortable with, and put a lot of rounds through it before you start carrying to make sure there are no issues. Use the ammo that you plan on carrying for practice to make sure there are no reliability issues. Its not cheap, but the whole reason to carry is to save your life or someone else. You can't put a price on that.
Just my opinion but don't get to worried about carrying something that has 20 rounds in it. I only carry 45 acp. I like the big heavy bullets. If I can't remedy a bad situation with 8 rounds of premium 45 acp bullets, its time to rethink the situation.
If you have never carried before, spend a lot of time practicing presentation.
It probably sounds stupid, but that is very critical, especially if you are carrying IWB.