Vacuum, speed bleeder, or..what's the best one man bleeding system?

I like the idea of pressure bleeding through the bleeder screw and forcing the air out of the reservoir, ya know, cause the air wants to rise. That being said I've never used one and the equipment is rather expensive. You can just crack the bleeder and let gravity do the work if your master cylinder is higher than the bleeders. It takes hours to do it that way. Then there is the little bottle that is kind of like a bong. Just keep slowly pumping the brake until it quits bubbling air.