If I had to suggest anything I would recommend looking what you want it for, the rx I had cleaned like there was no tomorrow but was heavy and cumbersome the rv put me off as I would like to use the carpet brush on all carpets but the motor may be not up to it so it may be not up to the job long term ie bigger jobs, I've seen 2 rvs come up on eBay this year I bet there may be one sat in a garage somewhere.
Just my opinion anyway befoe dave Ingram has his say?
Shaun