I'll go ahead and say Roadshow does rock! Seriously, if you have a network capable Amiga, get it right meow! Seriously night and day performance between Genesis and Roadshow. Plus, I always hated that you I could never quite get Genesis to start on boot up, but with Roadshow it basically did right away. Boot up the Miggy, and immediately I can browse, use IRC, etc. I know he's released at least one bug fix update since I downloaded, I should check again once I have my Miggy back to how I want it set up.
I say if you have the money, even if you don't really need it (for example you only use WinUAE, which has it's own bsdsocket setup) you should get it. I actually recently bought HDDriver for the Atari ST. 1) because I wanted the best to partition out my Falcon. 2) because I wanted to support the guy writing software for our beloved platforms! Oddly, I think I bought a copy of it many many moons ago, but I'm not sure (I know it was one of the different hard drive drivers, just can't recall which one!) Good times!