As far as sport vs cruiser, you need one of each. Just sayin'.... Sometimes you feel like sport ridin', and sometimes you feel like cowboy ridin'.
That what I did!
After owning a few bikes you realize there is no bike that really does it all.
The tbird is a surprisingly good handling bike. It takes some time to trust it but the weight makes it very stable and sheer power out of corners is fun to play with. Its low CG also makes it more flickable than you'd think. I'm not a peg dragger or anything, but I'd say I'm as fast on my tbird when I want to be as I am on my sport bike.