I know this is going to be somewhat biased, but I have the unique opportunity to choose a wireless NIC for our company.
It's like this... We have been rolling out many different types of laptops from Dell over the last couple of years and each one has a different built in wireless NIC. We have not had good success from Intel for obvious reasons, we have had great success from external Cisco cards, and good success from Atheros internal chipsets.
What I want to know is what are you using and what works the best. We want to pick one and move forward with only one type of card in the future for all of our laptops.
Thanks in advance for your input.