The 190D-9 (Dora) is a great plane to hone skills in. I flew it solely for about a month or two as I progressed through the very early stages of life within AH. It is the fastest plane on the deck besides the LA-7 and the perk planes. It is well armed, turns well, climbs well, and has fairly good visibility. It does have a nasty tendency to snap roll in slow manuevering, so beware, and make ready to use your rudder to compensate as needed!
Also, the Dora doesnt compress in high speed dives like the 109s do, which is nice for BnZ kills.
Lately I've been enjoying the 109K, as it seems to fit my preferred fighting styles well. I just wish it carried like 30 more rounds of the taters!