i run a deadlywinds fibur barrel. Its carbon fiber and accepts freak inserts. It is also very durable. Also look at pooty paintballs new barrel i like that as well. My friend has one and i liked it so much im going to pick one up my self.
Are you ready to drop $1500 or $2500 respectively on a marker? Why these two? You could get a used 2.0 without an OLED or used Geo 3 for way cheaper.
First off I play snake and have been playing a lot more mid since I've grown. Personally I want a smooth marker that is quiet but efficient enough to win those long points. I dont mine spending $1500 on a luxe OLED or the $1850 on the GSL.