I have the HomeTek Light 'n' Easy (from Costco - about £30/£35) and it does the job just fine.
It heats up in about 20 seconds.
It came with water softner stuff (which you can re-order) which I think is essential in the UK or the limescale will ruin it in no time.
I feel it leaves the floor a little bit wetter than my Mums one does, but I have a crappy cheap laminate (was put down by previous owners, suspect it cost about £1 for 10 meters! LOL) and she has good quality teracott tiles - so that may be the difference.
The floor looks clean, the cloth looks filthy - job done 
I soak/roughly wash the cloth, let it dry and use it again or/and throw it in the machine with the next suitable load.
I wouldn't go back to floor cleaner/sponge mop for anything, but I do miss the lovely fresh smell of the floor cleaner.
You also have to be careful where you leave it to warm up/cool down as it can mark the floor (best to leave it on a mat/carpet if you can).
So much more waffle than you asked for [bgrin]