Filter / Sample-Hold Clone Question

[chongmagic]

I am working on a clone of the Filter /SH. I don't have any LM741 chips on hand, so I used some TL071 as a substitute. I am getting the filter and some of the randomness of the S/H, but would it be more pronounced if I used LM741 chips?

Also, any of you that may have built on, did you use several 2n5088s to find which one sounded best or provided the best effect results?