As I remember the Colemans draw a little less current than the Dometic, but the condenser and fan on the top of the Coleman low-profile model was a non-starter for me as I can't imagine that being anything less than a PITA when parked under trees, not sure what they were thinking. Maybe it's less of a problem in the real world than I imagine though.
One consideration with the Penguin... it uses a fancy 'low profile' interior air distribution unit that doesn't have enough clearance to support a heating element, so it you must have the electric heat option then that one would be out. In the cooling department it works great however
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