I played in a place where they had three tables, two GC II's and a Kim Steel. They were laying carpet and had about 12 guys helping and the 12 guys lifted the GC's with no problem so they could get the carpet under them. When they tried to do that with the Kim Steel, they couldn't hardly budge it.
The Kim Steel played tougher than the GC's. I can't really describe what the difference was but when you played on the GC's and then went to the KS, you had to work hard to get into the groove of that table. If I had the chance, I always preferred to practice on the KS. Great table!!