What is the best adapter for capturing 802.11n frames?

[dunzy]

I have been happily using the NEC Aterm WL300NC for a while. I recently got a new laptop and the new laptop does not have a cardbus slot. So now I am looking for a replacement that is equally reliable.

- my built-in Intel 6200 seems to capture only legacy frames (not 802.11n). Anybody know of a way to get it to capture 11n frames?

- I plan to try the Linksys wusb600n. Anybody have good or bad experience with this one?

- Are there any atheros based a/b/g/n expresscard adapters on the market in the US?

[DJWP]

The Linksys WUSB600N is the most popular choice. Also the newer version, Cisco AE1000 also uses the same Ralink chipset and driver.

[dunzy]

What is the roadmap for Intel adapters?
Will I be able to use my built-in Intel adapter for capturing 11n frames?

[DJWP]

Intel has to open their API in order for us to use their adapters/drivers for packet capture. They have only done this once in the past and they don't seem likely to do it again in the future.

[dunzy]

Is there any adapter capable of capturing 3-stream mimo ?