My wireless network is unreliable. I have a wireless router in my basement office, but it keeps dropping my signal when I am in other parts of the house. Xiao Ming Wu wrote a review about the Belkin Wireless Pre-N Router, which should prove a more reliable wireless router than older versions.
Belkin's Pre-N router uses MIMO (multiple-input multiple-output) to communicate. MIMO is the specification that is used on routers that have more that one antenna. It's expected to be part of 802.11n when the specification is finalized in a year or so.
The problem with using any pre-N router is that you need a special pre-N wireless card to receive the fastest signal. The Belkin router is able to communicate to 802.11b and 802.11g devices or to an old laptop that you don't want to update with a new wireless card.
Check here for reviews of more speedy routers.