I have a polti vapertto, possibly an older model as mines white and green.
It's fantastic for quickly defrosting the freezer, fluffing up the carpet when we've moved furniture and blasting ground in blu tac out of the carpet. As you might guess from that list though, I don't use it that much for cleaning.
It comes out for deep cleaning tasks like blasting out dust from behind the radiators, steaming DHs luggage after trips (bedbugs are a big issue in a lot of the places he travels) and gets lots of use steaming round the sink and loo if anyone has a bug.
Day to day I'm less keen, it sort of moves the grease around the hob, so while the hob end up nice I then have to clean down the tiles in the whole area. You have to be super careful round paintwork or silicone sealant as it's really easy to damage them with a jet of steam.
It does a decent job of mopping hard floors, but I'm short and find the handle section to short to use comfortably.