Bostown,
I have not heard the Mini-me, but have heard the old HempCone Super 3i with both the Deep Hemp sub and Deep Hemp Cube (not both subs at the same time). Even though I found the bass satisfying on the speakers, the subs definitely added that extra dimension on the bottom end. Almost any small speaker will benefit from a sub, and I don't know of a better value sub than what Louis builds, not to mention they are a beautiful match for his speakers sonically, and many finishes are available for them.