http://www.zombienexus.com/forums/cms_view_article.php?aid=28&page=1 has a nice description of USB Comp Pro - I bought 2 recently 'for old times' sake', and as a confirmed on-real-Amiga Zipstick user I am very pleased with these USB digital controllers.
Although still having 2 Amigas left from about 16 (used only for converting to .adf) for a few years I have been very happy to use/update to excellent latest Cloanto Amiga Forever package (about £30 for top-spec CD with 2 DVDS).
