Biamping opinions please.

I'm considering adding a second amp and an electronic crossover along with a change of main speakers as the next series of changes to my system. I've listened to the all Linn systems at the local dealer and like the sound of the Aktiv solutions. Are there other manufacturers who offer speakers that are configurable for use with electronic crossovers? If I consider, for example, the Linn Tukans would I achieve satisfactory results by duplicating my present (B&K) amp and using a quality electronic crossover (marchand, for example)? I've only begun to think about this and obviously don't have much knowledge about it so I really appreciate your help. Thanks.