i'll keep flying FC3 because the F-15C is an FC3 aircraft
i'm not going to "flock" to DCS-level a/c just because they're "DCS-level" -- if its a kickass jet, i'll fly it - DCS or FC3 ---- and if its a booger, DCS or FC3, i'll leave it alone
but if i had my preference, it would be DCS ---- DCS means to me.. "simulation"
FC3 is closer to.. "game"