I've had two air-cooled GSs and now commute and run errands on an air-cooled Breva.  Air-cooled is fine.  Don't sweat it.

Just recently I got to ride a older 500 Ninja.  Yea It is quicker and had a little higher top end.  They both handle very similar(my GS has the SM knockoffs so the seating and lean over was very close to each other.

As far as the looks I like the looks of the 500 Ninja.  That older look is what I fell in love with back in the 1980's when the sport bikes came out.  If I got a deal on a older one of those I would possibly have to make room on the porch for another bike. :lol: