<wifi mfgrs don't matter>
Maybe my situation is unique because the wireless router is in a separate building (room in back of garage, 15' from main house), but here's what I found w.r.t. brands:
1. A DLINK 'B' router with 2 antennas + "Network Everywhere" PCMCIA 'B' card worked OK until I connected a Siemans passive directional antenna to the router, then it worked good.
2. Bought a NETGEAR 'G' router which had a proprietary connection to a single antenna, and the signal was obviously weaker than the DLINK even before I connected the Siemens antenna, so I returned it and replaced with a LINKSYS G router.
3. The LINKSYS G router obviously has better signal strength than the original DLINK B router (Its in G/B mode, but I haven't tried a G wireless connection yet.)
4. A NETGEAR 'G' PC card was tried and worked very poorly compared to the Network Everywhere card, with either the NETGEAR router or the LINKSYS router, so it was returned. In fact, in G mode with the NETGEAR G router, it kept disconnecting and would NEVER reconnect on its own, no matter how much I twiddled with the settings.
So at this point I haven't had much success with NETGEAR. I'm waiting for another brand of 'G' PC card to go on sale. If you have a shorter distance with not too many walls to go through, it might be OK.
Petz