recapping X-over B&W 802 series III

I am thinking I may need to recap my crossover's in my old speakers. The fellow I plan to use would do them both for $170. He plans to use Sonicaps instead of the Bennic. Whould this change the signature greatly?
Ill let you know. Im doing that now. Waiting to get them back from the shop. Ill ask for a detailed list of the new caps. Im sure there will be a break in period. I have the Matrix 802 s3