I've had two roll up doors. My first one was 12 feet wide by ten feet tall. I don't remember who built it. I loved it and really enjoyed the ease of opening it and how little room it took up in the ceiling when opened. I didn't feel that I needed 12 foot width in my next shop, so I went with 10x10. That door is made my Mueller's, which is a metal building supplier in my area. It was around $500, but not insulated.
Pros are that it is very easy to open, easy to install, and easy to lock closed.
When the door is open, it's all rolled up. This is the biggest selling point for me. I use my shop to build stuff in and I want all the ceiling height that I can get. Not having a door over my head is great, and for that reason alone, it's why I would always buy a roll up door.
Cons are that it is not bug proof and not totally weather proof. I don't have any wind issues, but water was getting in under the door on heavy rains. I bought a rubber thingy that glues to the concrete from Amazon.com that solved that problem. Basically, it creates a lip that blocks the water from getting under the door. I"ve used them on sectional garage doors with good luck, and highly recomend them for any door that has water issues.
The bug issue is something that I just live with. They get in from around the tracks and seal, and it's just not worth the hassle or expense to put anything up there to keep them out.
Eddie