Its actually pretty good. I have one and also a Linksys WAG54GX2.
Price wise with the current special offer on the router (which AFAIK is a Netgear promotion which runs until the end of Jan - OcUK are working it a little different to elsewhere though - have a look you'll see what I mean) its a good deal.
Range is better than the DG834GT on which it is based (uses the same Broadcom chipset) although not quite as good as perhaps claimed. Stability is pretty good and everthing seems to work well, although I'd steer clear if you have an Xbox 360 as its been reported to cause the DG834PN to play up (its to do with the Xbox constantly searching for new wireless controllers - it it doesn't even need to be connected to the Netgear)
Choosing between the DG834 & Linksys WAG54GX2 I would go for the Linksys for a few reasons:
1. It uses the Airgo "True" MIMO chipset which is proper MIMO - the Netgear kind of hacks it with an older Atheros Super G chipset and the Video 54 Rangemax antenna tech. Range is a lot better than the Netgear even without matching wireless cards.
2. The Linksys has very good QoS support, the Netgear has none. Pretty important if you are going to be doing any VOIP
3. Linksys supports VPN endpoints, the Netgear does not
Major downside to the Linksys though is the very bizarre decision to put a power button on it which means in the event of a power loss it doesn't power itself back up - very daft idea that. It also has no line stats or uptime stats in the web based GUI although they are available through SNMP.
If you don't need these features and bearing the current promotion on the Netgear in mind then it would be a good buy.