You guys are confused.
When you search for a CW for a single session key for a channel,being the channel Biss or Biss-E becomes irrelevant.
Including some systems that use ECM might use a single key for the session,like VOD in dish network,other services are simply sending the same ECM over an over,never change,and you still can find the CW to decrypt it regardless of the processes involved.
Biss or Biss-E does not make a difference to you,you can get a crypt8 and find the CW.
The fact you might not find a good crypt8 has nothing to do with the encryption,but how the encoder is setup to handle the padding and/or the repetitive patterns in the packets.