I also use a cheapie from a sex store. I found the squeeze bulb part didn't last long -- did I say the pump was a cheapie?
So I substituted another pump for the squeeze bulb -- the kind used in the kitchen to remove air from freezer and storage bags. That works better than before.
A cheapie will not have a good way to apply the constriction rings -- so I just use office rubber bands doubled over. I pump first without bands, remove the pump, then apply the bands while there is still some erection left and pump again. With the bands on, I find there is enough inwards blood flow to still pump up.
Another fortunate thing with this pump is that the tube, which is exactly 2" internal diameter, gives a snug fit around the base of my penis. That forms a seal, and as a result of that I don't need any lube -- no mess.
So, I suggest a cheapie to start with, and if you find a pump is not for you, it hasn't cost much. One day, I may shell out for an expensive one, but I'm having too much fun with cheapie....