I use the E1000 Linksys without issue. Only 2-3 computers on at a time, 2 wireless, 1 wired. I looked at the E3000 but didn't really need it.
Try out the Linksys E1000. If you don't like it, return it and move up to the E3000.
I'm gaming, downloading, and using a VPN connection from home into work ona 4MB connection. I don't have any issues.