Out of those two I preffer Ka-50 - simply because there is no decent chopper sim on the market, so this would bring "new quality" to Lock On. F/A-18 is "just another airplane" for me.
However I think that ED should focus on makeing LockOn more "in-depth" (adding Dynamic Campaign, AFM, better AI, more in depth modelling of all aircraft systems, etc.), but this is getting more challenging with every new flyable. :?
EDIT:
Noticed, earlybird told that already:
Out of my mouth exactly! :wink: