I have a Sire P5 5 ( the passive one) can't fault it. Lovely neck, sounds like a P, the B is fine.
I'll also throw the Reverend Mercalli into the mix. 5 string reverse P and MM - passive. I have both, the Mercalli is a bruiser and my main gigging bass. Very capable with a lot of tonal variation if required. I use the Sire as back up and pick it up first at home for practice and learning songs etc.