ModelDIO,
Other products that you can use are Microscale's Micro Clear & Micro Flat, and also Testor's Glosscoat & Dullcoat, both of which are lacquer-based. I've used all of these, including Future, and have had great results using them. The only problem I've had with Future is that if you don't pay attention to how heavy you spray it on, it will have heavy sags and runs on the bottom of what you're trying to coat.
Future is packaged in a tall, clear plastic bottle with 798mL capacity. It is an acrylic floor polish, designed primarily for no-wax floors, but can be used on just about any floor. A big advantage in using Future for modeling is that you don't have to thin it to spray it - just use it straight out of the bottle. I have read that some modelers will thin it with alcohol, but I don't know if that gives any advantages. I was siad earlier by someone else, I you want a bottle or two, just let me know. I'd be happy to send you some. Hope this helps you out. Happy Modeling!!