It seems that HIX Corporation is known to have the most even heating plate.
I also stumbled on a thread here that mentioned this discrepancy with hot/cool spots on heat presses...it's common.
Although, my press running at 55 degrees ABOVE the temperature gauge is still a bit of a concern/fire hazard/potential law suit when it burns down my house.
So that's all there to it I suppose...nothings perfect.