are they super reliable?
Just like any other gun, the more you pay, the higher the chances are that it will be reliable.
can you do a lot of modifications to them?
The pistol has been around for 100+ years. The supply of aftermarket parts is unbelievable.
do they just look cool?
Yes, they look very cool.
just wondering what makes the average 1911 cost $1200?
The average 1911 does not cost $1200. You can find many good ones in the $700-800 range.
I bought my first one a few months ago. I have no idea why I waited so long.
Shoot one and you will know. Perfection of design.