I am hoping to get a bed cover that somewhat rolls up to the cab. I see there are retractable covers with GATOR brand being on sale for $850-950 right now. Theres also a company called Peragon that makes a 4 panel fold up. Only issues I have with it are the need for a key to lock it (doesn't lock with tailgate being locked) and the fact that if anything is in the back of the bed you can't fold it. I can avoid leaving anything in the back of the bed but the locking part has me concerned it could be a pain. The GATOR retractable looks noisy...is it? Thoughts on these two options? Peragon pictured.