The RCA outputs of the V2 are at consumer levels (-10 dBV) while the XLRs are at professional levels (+4 dBu), and the RCA outputs are unbalanced while the XLR outputs are balanced. So in both respects the RCA outputs would be a better match for a consumer recorder such as the Sony M10.
There's a rule of the universe that someone in every thread has to point out the following facts, so I guess it's my turn: The ratio between -10 dBV and +4 dBu is actually less than 14 dB, because the two reference levels are themselves about 2.2 dB apart; 0 dBV = 1 Volt while 0 dBu = 0.775 Volt. So +4 is only about 11.8 dB "hotter" than -10. That's assuming as always a no-load condition (but do you know anyone who ever operates equipment under no-load conditions? I don't).
On the third hand, whenever you unbalance some types of balanced output circuits you throw away half the signal voltage, while with others you don't--so beware of generalizations that go too far. Anyway, use the RCA outputs!
--best regards