In-game, the D-9 is my #1, with the 152H-1 a close second. All my all-time favorite 190 variants though aren't entirely in the game, that would be the D-13, D-11 (was minimaly manufactured and in active service... but still, was in active service! *puppy eyes twords HT's general direction* ) and the short-winged Ta152C series of aircraft (which a few prototype/development models were made and saw action, but beyond that did not enter official production before the end of the war
).
If I had a personal wishlist, it would be for two aircraft: a D-11 or D-13 and a G-3 or some G-varient would be nice to see in the game some day.