So i lose close to 6-7$ Depending on the amount i mix.
With bestmixer i lose less than 4$,and i think anonimity is much better on bestmixer,plus the unique code is really good since it gets me loyalty discounts.
Or you could just send 0.056
BTC, get the 0.032
BTC, 0.016
BTC and 0.008
BTC chip (as explained by DarkStar) and pay exactly 0
BTC fees for that. Keep the change (the $6-7) and buy a beer with it, or use a different mixer just for that, donate to your charity, whatever...

But feel free to use the mixer you like the most. Cheers.