New Active Crossover... Bryston 10B, JL audio CR1, Pass Labs XVR1 or First Watt B5?


Okay, so this is a lot of crossovers... Does anyone have experience with any or all of these crossovers? I am looking for the unit with the most transparent high pass out of all of the above:

Bryston 10B
JL audio CR1
Pass Labs XVR1
First Watt B5

This will be for separating my mains from sub in a my 2 channel system.
nemesis1218
Marchand makes various types of crossovers.  He even had some tube ones.  Price was reasonable and he even had some tube ones.
There is a 10-B for sale on usaudiomart right now. Manufactured in 2012 so plenty of warranty left. $1100.