Markmont Classic is great, but like others have said, others might be better “competition” shapes.
I really, really like my Space Cowboy. Highly recommended. Spins forever, super stable, nice shape, and the polished steel rims look awesome.
Valor is also great, only reason I don’t have one is because I’ve had other throws above it on my list before I got to throw one.
I’ve heard good stuff about the Werrd Irony JPX. Really want to try one out, but don’t know any throwers around me and no stores around me carry them.
Personally, I’ve avoided Oxygene stuff due to their different bearing size. The shapes interest me, but the fact that bearing choices for that size are extremely limited, I’m turned off of them.