I own both birds and my Tomahawk is actually lighter than my SG. My Skygates were not built light though. They have all the extras and some beefing up done to them as well as the full bypass and large fuel tank conversions.
If I didnt already have too many Hawks, I would be buying the new Hawk from Comp Arf I would be putting in Marc S full bypass, intakes and fuel cells, if Andreas isnt making his own, and I would be planning to install a P200. A P180 would fly it great, but the extra weight of bigger turbine will do this bird some good as David has suggested. Andreas Hawk might not be as light which will be a good thing.
I just flew my TH about a week ago and its wonderful with zero wind. It could stand to be 10-15 % heavier though.
Both my SG have P200 now. My TH also has P200
The early SG Hawks used to fly with a P160 back in the day, but i dont believe any of them were fully bypassed, hense the apperance of lacking power. A unbypassed P180 or P200 is perfect, but this bird really needs the bypass system in my opinion for several reasons.
David Searles Hawk flew geat with the full bypass system. Im really happy with mine as well! There is a big difference between the unbypassed vs bypassed.
The best flying Hawk I have right now is the SG loaded down and with the full bypass, intakes and large fuel cell. Im building another TH Hawk 100 now and I have adapted the Scully intakes to fit, so we shall see!
Scott