A friend of mine had a Seca way back when we were tads, it could eat my KZ750 twin up one side and down the other, don't know about the 90's version but the early 80's one was pretty cool
The Nighthawk was in production until recently so parts should be available for a long time to come. The Seca has been out of production for quite a while and parts will be getting problematic soon if not already.Up here in Vermont.. the riding season is slowly coming to an end. I hope that I can complete the transaction and hit the road before the ice and cold get to me.
Nighthawk is what it'll be.
I also came across http://www.motorcycle.com/shoot-outs/frugal-flyers-a-sixbike-shoot-out-576.htm
The 750 was their choice as well.