Biamping with a pair of 2 ch amps....

I would like to try biamping my Vandy 2C's...I have a pair of identical NAD 2200s to work with...the vandies are biamp capable by removing the external jumpers...seems I have two possibilities for hook-up: 1)use one amp per speaker or 2)use one amp for L/R lows and one for L/R highs...my thought is option 2 is preferrable as it gives the left and right channel of each amp approximately equal duties...what does conventional wisdom say???