Will the hydro pump be similar to the bathmate?. If so, cost comparisons would be a major thing, and with personal use, i would suggest a hand pump at the end and a better sealing design at the base. The comfort peice bathmate offers is a hard cylinder with a poor seal, i dont bother with it as it allows air inside. And to those looking for a thicker package, Get it maxed as an erection before water pumping, 4 to 5 mins at this pressure then release, do some jelqing softly as it may be tender. Max 15mins in a day. I did upgrade from reg condoms to magnums. So it does work. I hope the best with a stealth product as well.
