I own a old used 64" GBC Titan that I picked up used for $900 (it was a hot/cold laminator, but whoever owned it before me removed the 2 rear rollers and heat controls etc. But works great as just a cold laminator. I have also used a 64" RS that i liked. and also a 54" RS that i hated cuz it used to eat almost everything i put through it. But the company I worked for at the time didn't care that they were throwing away $100's in the trash, and refused to buy a new laminator. I also have used a 56" big squeegee, which is the worst thing i have ever used for laminating (IMO), I now only use it as a straight edge and as a hinge point with a50yd roll of vinyl on it for weight when applying graphics to substraits in the shop (rather than waste masking tape)
So my vote goes for GBC because mine is missing parts, has been taken apart and put back together at least twice, and it still can laminate long runs without eating prints.