Have a silvercrest one, for about 18 months - find it very good. There is a very long plug lead (great for when you can go from room to room without unplugging) , quick heat up time, good power from steam. It's not used that often - but when it is used, it's on tiles, wood flooring and carpet.
Haven't used other steam mops in the past, so can't compare to anything else, but gets the job done.