like the guys said, go for an Ion..
For the price of an Orion, just save a mittle more and get yourself an Ion..
The orion is just an average High preasure blow back if memory serves...
Sure the Ion will need a bit more TLC, but the Ion will go toe to toe with any marker out there and hold its own..
where with an Orion, your gonna be outgunned at a walkon or a tourney.
Only thing with the Ion is its generally advised to strictly use Air.