It seems that iPod docks all tend to blur together, except for the ones that are also toilet-paper holders, but the Griffin Evolve was elegant enough to stand out. The cube speakers can be removed from the dock and placed anywhere within a reported 150-foot range--not too shabby. There's no complicated charging dock for the speakers: They fit flush into a recessed area on the dock and charge with lithium ion. That's the same technology used for laptops, and it provides up to ten hours of use.
Details were a little sketchy on whether you can use this for multi-room broadcasting; each speaker set syncs up with its base, so you could have multiple Evolve sets in the same space, but we were unsure on whether one dock could output to multiple speakers. The Evolve comes with an RF remote (all the better to control from around the house) and includes a line-in for non-iPod players, though you'll lose the charging capabilities. The Evolve will be available this summer for $349.