Hi mate. I have one and think its great. I use it on all the rat nasty jobs and for large areas. It's the perfect size for residential jobs. I use it with a tm and portable although with the portable it does use a lot of water but it can depend on what size jets you use. I have the 360i with the quad head, brush head and the regular 3 swoop glide head. The brush head cleans the nasty ones amazing. I have found using the rotavac with the portable you can can achieve exactly the same results as with the tm. In fact when working as a 2 man team (1 guy filling and emptying and 1 guy cleaning) I have cleaned some disgusting houses just as quick using the rotavac as I would have done with a Tm.
Luc