Investing in a steam vacuum

[Ravi Rai]

Hi guys,
Our current tenants have moved out and the new ones will be moving soon. This is a student rental that has carpets throughout and we wanted to steam clean the carpets. I was thinking it would make sense to invest in a good steam vacuum to clean the current carpets and hopefully use in other rentals that we buy. I was looking at the rug doctor mighty proX from Walmart:
http://www.walmart.com/ip/15908365?wmlspartner=wlpa&adid=22222222227000693251&wl0=&wl1=g&wl2=&wl3=30061718350&wl4=&wl5=pla&veh=sem
The reviews seem pretty good, I wanted to know what you guys use and what you make of the above.