I just wanted to post a correction on what I said about the Doepfer A-105 SSM LP filter in my last post. It doesn't use a Curtis (CEM) chip, but rather the SSM2044 (you would have thought that obvious huh?).
Anyway, it was used in the early Prophets as well as in the Mono/Poly (one of my faves), it's just not a Curtis chip. I had thought the Sequential stuff had always used the CEM chips, but that apparently wasn't until later.
If you click the product link above, you'll get the full rundown.
In other, yet related, news, I believe this is my new favorite filter, at least for LP. I certainly like it's character for traditional LP sounds more than the FrequenSteiner. I'm going to reserve final judgment until I have some saw waves to run through them both, but so far the SSM wins for LP sounds (the FrequenSteiner still has some of the meanest BP and HP sounds I've heard).