I haven't really played around with a Linksys router.. just a hub. I have a 4 port Netgear RT314
. It suits all my needs and then some. It's around $120 in stores, but if you look carefully... some places are selling it as low as $70 w/rebates: Best Buy was a few weeks ago.
Even if you don't have a cable or DSL line to split, I'd suggest anyone with several computers to get router or hub. Aside from increasing your overall hard drive space, you cause use multiple monitors w/o having to install another video card