Still on the search for the perfect Bucket Brigade Device module.
I just purchased these two on Ebay.
The A-188 series of Doepfer Eurorack modules are great value. They use the Panasonic BBD chips and as always with Doepfer, the build quality is excellent.
The A-188-1 X uses a MN3009. Its a 256 stage IC. These are getting hard to find.
The A-188-1 Y uses a 512stage BBD.
This module happens to be using a newer Panasonic MN3204 IC. These 32xx ICs are lower voltage than their 30xx cousins.
You can read the manual here: