Rotarys are hardly the flavor of the month. They've been around since long before the notion of steam cleaning carpets existed and indeed, were stand alone systems or used with wet vacs since in home cleaning became popluar 70 or 80 years ago. They're still around because they give the best visual results. The RX-20 came out 30 odd years ago and combined rotary with steam cleaning albeit with a heavy, slow, barely adequate method. It was improved over the years, and many manufactorers have entered the market with many improvements. I'm still liking the 360i the best, due to it's light weight, aggressive cleaning, versatility and ability to use the standard head on heavily soiled stairs. It replaced my heavy 175 rotary I used for 35 years and haven't touched since I bought the 360i.I haven't concerned myself if my TM (Pro1200) can keep up with the heat as the cleaning head beating the carpet obviates the necessity for the extreme heats a wand alone needs. It goes through a lot of water but rarely does the 150 gallon waste tank need to be dumped before the job is done. Dry times beat a wand alone especially if you bother to spend the extra 45 seconds to make a dry pass in a room. And when I combine the 360i with an auto fill/auto dump portable it really shines.
I just saw a Mytee T-Rex at the local Interlink dealer,and I must say it is very impressive looking. I'm hearing good things about it's speed and cleaning ability. But I picked it up and it felt like picking up Rosie O'Donnell. I can't imagine carrying her through four or five thresholds a day for weeks and months at a time.