FS9 Kingair 350 and Baron 58 "tune-ups"?

[vic365]

I'm looking for your freeware recommendations for improving or replacing the default FS9 Kingair 350 and Baron 58. I've seen all sorts of FDE's and such...even a turbocharged Baron which is interesting. I don't think I can stand anymore flights with the defaults, as is. The AP is hoaky, the FDE's seem way off (not being a real pilot, I'm going by "feel") and the general aircraft handling seems...sketchy...at best.

FDE's, panels, entire aircraft...whatever you got!

Vic