Debj
I am with Gary (not literally).
I had a crappy £50 steamie thing years ago from a catalouge. It worked 'ok' but annoyed me as there was no steam off/on control, rather you just had to turn off at the mains switch and wait for the heater to stop. Right pain that was.
I kept it as now and then there was the odd job it came in handy for (like defrosting the freezer). Anyway, when it came to buying a pressure washer i opted for a cheap Power Devil thing which was no where near as good as i was expecting and when it broke i took it back, spent a bit more, and came away with a Karcher which was far, far, superior.
So, it made me wonder if the average perfomance of my steamer was due to it being a no-brand crappy make. Well i never wanted to spend the £250 to find out and never did find out UNTIL January 2006 when i stumbled across an almost new Karcher steamer (complete with steam iron) in a charity shop. I gave £60 for it.
Excited to the point i thought i'd wet myself, i set about cleaning anything and everything.........and what a dissapointment

Although it was sturdier to use than my 'old' cheap steamer (and the steam could be stopped), the performance was no better. I still use it now and then (for certain jobs like cleaning solid-wood kitchen cabinet doors its really good) but i find that a spray over the dirty area with a product is often needed first AND i find it splatter the sh#t that you've loosened ALL over the place (and the floor, oh and the user...) plus you cant always see where you are cleaning as the clouds of steam are not unlike that seen on 'Stars In Your Eyes' (Tonight Matthew, i'm going to be sterilised) which is a bit of a handicapp.
I am not sure that steam cleaning a gents toilet is going to be the best way forward.....
BUT......! Martin from Brighton has bought a steamer recently and from what he's said he has managed to get along with it just fine, so i think its the usual case of something working for one person and not for another.
Cheers
Stephen