Best USB or Ethernet wireless adapter under $50?

[Vulpesveritas]

Just wondering what would be the best for me to get. I'm limited to wifi at the moment, and will be using the wireless adapter for both my current laptop and my desktop.
I'm currently looking at these three at newegg:

TRENDnet TEW-647GA Wireless N Gaming Adapter IEEE ...

Rosewill RNX-N600UBE Wireless Dual Band Adapter IE...

Rosewill RNX-N250UBE (RNWD-11006) Wireless Adapter...

Opinions / advice / better deals perhaps?

 

[Rhyseh]

I'd go for the trendnet simply because it has an ethernet port rather than USB 2.0, which means more potential uses, also means that its easier to troubleshoot if something goes wrong..

I should also support a switch.