OpenSUSE Wireless :: Upgrading WiFi Network To 802.11n?

I currently have a WiFi network at home that serves two PC's, a Laptop (all SUSE 11.3) and a couple of WiFi radios. I also use IPCop as the Firewall. The system currently uses 802.11g, but the PC's and Laptop really struggle to achieve any reasonable internet data speeds, particularly as their RF range to the Wireless Router is very disappointing, so I have a couple Wireless Access Points. Unfortunately, whilst these WAPs might slightly improve RF coverage, connecting to the Router via one of them only serves to slow down the internet upload and download speeds even further. (Not much point in paying for expensive 4M internet access if I am only achieving a typical download of 500-600k!)

I want to completely replace my 802.11g with 802.11n - to both improve range and throughput. I'm looking at the 'Netgear Range Max Dual Band Wireless-N Gigabit Router' as this also has 2.4GHz (my WiFI radios are only 2.4GHz compatible). Unless, of course, anyone has any good reason to recommend I DON'T purchase it? My problem is that I am struggling to find up to date, accurate information that can advise me on which 802.11n (2.4GHz and 5GHz) PCI cards, PCMCIA and USB Adapters are compatible with SUSE.