I've got a DG834GT and I can't recommend it. I've had some serious problems, replacing 2 faulty units in 6 months. I've also had great difficulty getting problems through to Netgear's support. I'm not the only one, have a look at Netgear's wireless forums:
My first unit failed after a couple of weeks of contantly dropping the ADSL connection. My second unit worked ok (with numerous ADSL connections being dropped), but the wireless signal dropped after about a month. That's a difficult problem to explain to support, when they're convinced you've placed the router on top of the Microwave. My third unit works, and has an uptime of several months.... It wouldn't suprise me if there was a hardware revision tucked in there somewhere. On a side note, I've had no problems at all with Netgear GT PCI or PCMCIA cards.