As I get older, my eyesight isn't as good as it was when I was 20 so I like 3 dot sights. However, I bought a pair of graduated shooting glasses with the reading (close sight) on top of the right lens. Now the sights are clear. Still, 3 dot sights are easier to use compared to the original sights.

FYI: Vintage (WWI & WWII) Colts have pegged front sights whereas the later Colts have a milled slot that makes it easier to change the sights.

Also if you have beefy hands and/or grip the pistol high, you may want to but a beavertail grip (very easy to change) which will minimize 1911 bites on your hand web. I get those "bite marks" on the web between thumb and forefinger when I shoot an unmodified vintage 1911 or a Browning High Power.