Ok, some people are still obviously confused.
Compressor surge only happens when the BOV isn't large enough, doesn't work properly, or doesn't exist. It has nothing to do with whether it's plumbed to atmosphere or back into the intake.
A 2 second difference between recirculated and atmospheric BOV is ridiculous, and must be driver error or something else. It will not make that much of a difference unless something is seriously setup wrong.
Atmospheric BOVs sound cool, but are often setup wrong in that they lose metered air. This is not a requirment, however, you can switch to a different air metering system with a MAFT, for instance, move your air meter to after your turbo (blow through mode) and mount the BOV before the air metering device.
Recirculated setups can theoretically respool the turbo faster, as there is less drag on the compressor wheel. In practice, you would have to build some sort of measuring device accurate to miliseconds at the least to verify this. Car manufacturers like recirculation setups because it's easier to make sure you aren't venting any contaminated air... and places like California are hell on emission laws.
Hope that explains everything.