Most consumer routers from Linksys, Netgear, Microsoft etc. sufferer on or more fallabilities usually from firmware implementation. Some of these they'll fix, in doing so they'll probably add some more problems too
Probably the best thing to do is look for one that supports the features you need reliably.
e.g. Wireless & Security, firewall characteristics, instant messenging support, port-forwarding for home hosting etc...
There are forums for most of the network brands on
http://www.dslreports.com/, ask the forums what troubles they have had. Ask them what they'd recommend you need to do when you get your router too.
When you get your router do expect to
- update your router's firmware as soon you get it.
- experience problems from newest hardware.
The consumer network market is really cut-throat, with everyone racing to get products on shelves as cheap as possible. Often this has meant that QA really is done after the product ships. As firmware matures generally the products gain greatly in reliability.
Most network companies only spoke to IT professionals previously - so they're learning how to deal with supporting novice network users too.
Having experienced support from most of the major vendors in this market - they're all pretty much of the same low standard. You'll get better support on forums like this or DSLReports, or net newsgroups.