Hi, kool...
Ya, i bought the Karcher steam cleaner oreadi, model SC1122 at $298/- only(same price as the Beetle one)..One of the reason i go for this one is bcos of its lightweight at 3.4kg only and the maximum steam pressure can go up to 4bar, furthermore descaling required only once a year..you can see the demo at Compasspoint Courts..
In fact, i saw the Osim iecologi demo before and was quite tempted to buy..but later heard of many negative comments abt it. Moreover the osim one requires more maintenance and it is quite costly too.. If u r interested in getting Karcher, maybe can check it out at their website :
http://www.karcher.sg/sg/Products/Private/Consumer_Indoor/Steam_cleaner