Linksys and Cisco has some alternatives, such as the Linksys WRT160N, WRT54GL or the Cisco WRV200.
If you don't want to fiddle around with a Linksys (Cisco's home user brand btw - their routers often runs Linux, meaning great potential but a lot of user configuration to do), I'd pick a 3Com 3CRWER300 or a Netgear WNDR3300/WNDR3500 - they're just within or a small amount above the stated budget, and they should meet your needs more than well.
The Linksys/Cisco ones are usually great too, although some computer (esp. Linux and general networking) is required to get the most out of them.
OR; You could blow the budget and get a D-Link DIR-855, which has a throughput that as good as owns any similar product, in pretty much any price range. That's what I would go for if I didn't have a custom Cisco setup