Bathmate Pumps Comparison
There are 3 categories – Bathmate Hydro (basic), Hydromax (intermediate) and Hydroxtreme (premium). All three pumps listed are very similar. Filling them up with water is the same, the pressure is very similar, the quality is very high, they are all comfortable, and all will give you gains with proper and consistent use. If you already own one of the pumps mentioned above, there is no reason to upgrade or switch.
However, there are slight differences that make some pumps superior to others. But that depends on the individual and your personal goals.
Below is a quick comparison of the common facts provided by the official merchandisers