"Hi!
At the moment the best way to distribute your Scrypt hashrate between pools is 50/50 between LTC1BTC and F2Pool and your SHA-256 hashrate between F2Pool and AntPool.
Regards,
Christine
HashFlare.io Support Team"
From when is that information? I asked their support yesterday the very same question and for SHA-256 they answered "50/50 BTCchina and AntPool".