Reply to cdj suggestions!!850 vs 1000mk2

hi,
right now iv'e got a cdj 850 near perfect condition & a cdj 1000mk2 a bit used but good condition.
ive been offerd a good deal on a 1000mk3 good condition and need to sell the 850 or the 1000mk2 for some of the money.
which one should i keep which one should i sell??
what is better,perfect condition 850 or ok condition 1000mk2???