I’m not familiar with the composite prop for the Cirrus, but have flown with an aerobatic composite (The “Claw” by Hartzell, 3-blade, 78") for five years. It’s performance is phenomenal. Granted, you are not worried about vertical “hang time” in the Cirrus, but some of the other superior qualities of a composite may be relevant for your purposes. For example, in aerobatics, we are legitimately concerned about snapping off an otherwise weakened blade if we pop a snap roll too fast. This is a non-issue for the composite…it’ll just flex and and return to its normal shape. It has incredible strength, compared to wood or metal. I am also personally familiar with several instances in which these composite blades were bent when a plane nosed over, or otherwise had accidental damage (hole punched through blade by forklift). Repairs were either unnecessary or cheaply accomplished. The blades were made as good as new in all cases. The Claw also has an unlimited life…no scheduled re-build ever required…which I assume is probably true for most Hartzell composites. Given that my engine has a 1200/hour TBO, it’s nice to know I’ll never have to put another penny in the prop. My blade also has a nickel leading edge. Unlike the aluminum blade on my Piper, this leading edge never shows any wear at all. And frankly, the pitch black color of the blade looks “baaaad”!
So…there are a few more items to consider in making your decision. For doing akro, it’s a complete no-brainer. The composite wins hands down. For normal cruise flight in the Cirrus, some of the superior qualities in a composite might be over-kill…but in the long run, just knowing you never have to replace the prop, may by itself justify the extra expense.