Wireless N USB adaptor

[sZero]

So im planning on upgrading my wireless setup.
First of im getting the linksys WRT160NL router, since the review on here seems pretty good.

And im gonna need a USB N adaptor with it, but what is my best choice for that?

Im not really good with this stuff, all i know is i want the most reliable.

Also im coming from this access point > DWL-G700AP High Speed 2.4GHz (802.11g) Wireless Access Point, but what exactly is the major difference between an AP and a router? And will there be like a major difference?

Thanks, oh and i did a lot of research so please dont link me to a search function. i just dont really know much about this stuff and would like some help

 

[sZero]

http://www.linksysbycisco.com/US/en/products/WUSB600N

I figure this should work well, but i cant seem to find this one?
Whenever i google it, i find an older version or some sort of it

Or would an expresscard work better? This one specifically http://www.linksysbycisco.com/US/en/products/WEC600N

 

[Osamede]

Is there really any point in a "Wireless N USB adapter"? From what I understand the max real life throughput of USB is far below that of wireless N. Which would make this thing basically an expensive bottleneck.

 

[thiggins]

In my NAS tests, I see USB connected drives max out around 22 MB/s, which is well above what most dual-stream N routers can support. Perhaps USB 2.0 will be a limitation for 3 stream N, but I expect you won't be seeing many three-stream USB adapters.

In the end, an N USB adapter will provide higher throughput than a G adapter.