Gemini Crossovers

Is anyone using a Gemini active Crossover in their Bi-Amp configuration?
I am considering getting a Tube Amp to use along with my solid state amp in a Bi-amp configuration, and I am wondering what brand of crossover to use. I see that Active crossovers can be very expensive, and Gemini active crossovers are the cheapest ones I have come across. Does anyone recommend using Gemini crossovers? doing a search for Gemini crossover you will see that they have several Active Crossover modules. What do you think?