Good reception, especially with USB extension cable,
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This review is from: TP-Link TL-WN722N 150Mbps High Gain Wireless USB Adapter (Personal Computers)
I've used one of these for about a year and six months. It has served me well, and I've used it on Windows 7 64-bit, and Linux Mint 13 Maya 64-bit, both on the same desktop computer. I just ordered another one for my laptop.
I advise getting a USB extension lead when using one of these. Wifi transmission rates get iffy, especially when reception is bad, since the signal is digital, and if a certain threshold in signal quality is reached, almost no data can get through at all. An extra dBm or two on signal strength makes all the difference.
I also advise using a program like Inssider (iwScanner on Linux) to measure exact wifi signal strength and how other wifi networks in the area might be affecting your network. The more densely populated area you live in, the more important this is. On that note, looking out for equipment that can use Channel 13 (legal in the UK) is a good idea, since most of your neighbours will be using Channels 1 to 11. This dongle can do Channel 13.