Customer reviews:
Customer Rating: 



Summary: Innovative controller for an unfortunately-fated console
Comment: Pros: +Sega
+Dreamcast
+VMU memory units are pretty cool (see below)
+Good triggers
+Fairly ergonomic
Cons: -Ugly
-Dual VMU slots could not look much worse lol, though they add funtionality
-Wire comes out the bottom, so it gets in the way a lot
Overall: 8/10
Other thoughts: The VMUs have screens on them to add funtionality. They can be linked together to trade files as well as play games if Im not mistaken. They add information (i.e. in RE: Code Veronica it shows your heart beat meter).
Customer Rating: 



Summary: Also not a game.
Comment: Well Amazon needs to update their review page, this is the second accessory that is not a game. I like it, works just like the original....oh wait, it is. :P
Customer Rating: 



Summary: Darn good controller
Comment: This is a very good controller, the one that came was one of the european version indicated by the blue swirl but it will work on north american dreamcasts, i would give this 5 out of five, im 6 foot 3 and i have huge hands so this controler works just perfect for me
Customer Rating: 



Summary: Great controller
Comment: I purchased one of the "New" ones and recieved a blue-swirl European (PAL) version. Skeptical, I looked it up and found that there was no difference inside the controller.
The controller works great. I haven't had any issues with any of my Sega DC controllers yet - after 5 years and several tournament used.
Customer Rating: 



Summary: Sega Dream Cast Controller
Comment: Just needed a controller when I gave the system to a little boy. Works fine from what I hear and I received the controller from the seller with no problems within a couple of days. Thumbs up!