Kevin,
The Cobra is..... smoother, more powerful, cuts faster (power and extra weight the key factors), cuts closer to the sides and front wall so slightly less edging, has a light to highlight the floor directly in front of the cutting area, impresses customers far more than the Hummel, has height adjustment (one of our affiliates has two guys who floor sand for him, one guy is just over 5 feet the other around 6 feet this machine can be comfortable for both), very quick and easy to totally dismantle for transport which means you're more likely to do it which is much better for the machine. In truth the old Cobra was a slightly nicer machine to use than the Hummel but the back up wasn't nearly as good, now Uzin own Franke it should all be much better. The list price is £4420 plus vat, I don't know what the Hummel is but my guess is they will have to drop the price to compete. I have 2 brand new ex stock Cobras at a discounted price if anyone is interested!!
Terry