I have the 3x3 stage vac, 200psi version, it is a very robust and powerful machine, I previously had a twin vac (Truvox President) which I now use as a back up and the Rhino definately outperfoms this. It has been good for me so far, had a few minor niggles when I first purchased in that I had to change the female solution connecter valve as it was leaking a little, and stick down the sponge again inside the recovery tank lid for which copydex glue seemed to do the trick, but all in all for the price that I paid, feel I got a bargain really, in the short space of time that I have had it, its paid for itself several times over.
Best of luck if you do purchase.
Nigel.