In the process of building a crossover with 5 different caps on the tweeter which can be changed by a turn on a rotary switch, one nearly done. Finished the boxes yesterday. Will keep you posted.
Caps used
Mundorf Silver/Gold
Duelund VSF which I am going to use a V-Cap TFTF as bypass
Jupiter Bees Wax
Clarity Cap bypassed with a Audio Note Copper cap
IPL's home grown