Here are my 2 cents (which is probably overpirced)I fly a Marquart regularly & have a buddy with a Skybolt, which Icommandeered a few times. - (both IO360)The Marquart flies / lands slower, the Skybolt is easier for inverted flight. (most likely due to the different airfoils used)Both are well balanced & light on the controls. My buddy added spades & said it is really light in roll now.Neither has theaileronstall / buffet @ full deflection that the RVs are famous for.The Marquart is moreforgiving of doing something really stupid but isn't as 'crisp' as the 'bolt. That being said, in a dogfight I can beat the 'bolt (mainly because I cheat).The Marquart mushes into a stall, the Skybolt more of a break.Either plane is capable of beingcompetitiveat sportsman level (with a better pilot than me).Compared to a Pitts or an Eagleneitheris as crisp, but they also don't slap you as much when you are sloppy.Either plane is a hoot, I don't think you will go wrong either way.