Bead Breaker/Tire Changer

Anybody here have a recommendation for a manual bead breaker/tire changer. I do not want to break the bank but I think investing in a bead breaker/tire changer could save me some money down the road.

I would like one that could be used for my 570, my trailer which has 4.80 X 12 tires and possibly my riding mower. So, what are you guys using?