So I currently have this adapter:

http://dx.com/p/802-11g-54mbps-high-...k-dongle-35688

It works quite well I must say. But I lost the omni directional antenna. And so A good opportunity to buy a new adapter which might be better. I read a lot about this and decided I want to go with the in a lot of topics covered Alfa AWUS036H.

I found this model: http://dx.com/p/alfa-1000mw-802-11b-...-silver-112006

Price: US$ 21.10 with free shipping. Is this a real alfa AWUS036H? I kind of like how it looks with the dual antenna!