I was looking at tumblers and blast cabinets yesterday at HB. The 5# tumbler looked too small for things like drop target assemblies. The 18# tumbler was bigger, yet it was around $150 before you buy media. The blast cabinet was only $115 before media and can fit pretty much anything you'd need for pinball. So, my question is... is there a reason you'd pick a tumbler over a blast cabinet and why?