When folks have asked in the past "what's it like?" I usually describe it in a way I feel is brief but accurate: It's a cross between a 109 and a 190.
I don't like comparing it to a 190A, other than saying it has the same guns as the 2-cannon-armed A8 model. It doesn't handle the super-high-speed dives as well as a 190 does, and will out-turn any 190 (from my experience), whereas a 109 will out-turn it if no gondies are carried.
Whatever performance aspect it bests on the 190A, the 109 will best on the 205. It's (IMO) halfway between the two.
Handling is tons better than a 190, but not so light as a 109.