I had been thinking about it for a while but couldn't decide between A-Steel with either F-Brass, F-Iron, or F-Steel.
As @Slimy_Slider points out that F-Brass with storing body heat is nice if you live in a warm climate (darn Texas heat). It would help save on an electric bill that's for sure. Steel Compounder would be really fun to have, although not sure about the slow movement to store the speed. F-Iron would only really benefit the A-Steel. Not much use for it outside of that from what I could think of (On second thought it would probably be pretty useful in sports.)
I guess it comes down between "How practical would it's uses be?" vs "How much fun would it be?" A-Steel/F-Brass is probably the most practical, followed by A-Steel/F-Iron in second then Steel Compounder in third. Steel Compounder is probably the most fun, but I wouldn't want to store it ever... which would then have A-Steel/F-Iron in second again with A-Steel/F-Brass trailing in third.
So in the end I guess I've decided to go with being a Crasher just because it's a "best of both worlds" scenario. Practical and fun in that you don't have to worry as much about the anchors you're using, or the damage you could potentially do by just flying and using random anchors.
Side Note: While thinking about it A-Iron would be really fun to have in a big city. You could basically swing around like Spiderman.