I'm looking for a R-TNC type antenna for my 54gs. Should I buy the (expensive) linksys ones, or go for a cheaper model. I noticed that some cheaper, lesser known brands have a higher gain than the 7dBi linksys model. Am I going to suffer with a lesser known name or will the higher dBi help out my range? Also, if I get an antenna how much will my close-range computers improve? I understand that stronger signal = less dropped packets = better speeds, but whats the real-world on this one? I read the highest gain you can legally obtain in the US is 21 dBi. Do they have antennas like this (at a reasonable price?) Is the 54gs strong enough to drive one of those?