I would definitely go with the matrix. I have one and although I'm selling it I couldn't love it anymore. It's what is great about many markers all rolled into one minus the efficiency and weight. It is very consistent with a stock dye reg, accurate, has low kick and is very very fast.
It is not very hard to maintain either, all you have to do clean and lube the orings on the bolt.
I don't know about the bushie, but from my experience, my matrix killed any imps at my local field, and I'm guessing that the bushie is like an imp so yeah
go matrix
edit- i get around 1300 shots with the top hat mod on my stock bolt so efficiency isn't too bad