Is This Wireless Card Good? Any Recommendations?

Hey, i was looking for a wireless card to buy from the local vendors, and the best one i could find is this one :Edup ep-ms-1552, it looks good with dual Antenna, 300mbps, b/g/n, and on their website they say that it can reach up to 300(0.1km) feet indoors and 900(0.3km) feet outdoors, and is it better than a midrange alpha card?