I have had both. While rollers have some advantage in very shallow water accesses, it is not enough. I will not go back to a roller trailer.
Pull up to the access, pull your straps, loosen the front strap (just a precaution), back truck up, push boat off, go. Very simple and quick. I would bet that alone, I can do all this in under 2 minutes.
Loading is even easier. Back trailer in, drive boat on, hook front strap, trim up motor, drive away. It takes me longer to walk to get the truck then it does to load.
Drives me nuts when I have to wait for a guy with his roller trailer half in the water while he cranks for 5 minutes, then takes a break, then cranks again.