SR-71 Blackbird said:
dlink dwa160 works with my two 64 bit win 7 systems
You have to realize that the IEEE 802.11n protocol standards were finalized on Jan. 18, 2010. There have been wide spread problems with wireless adapters with Windows 7 64 bit machines BUT only with some of them. The problems are being tracked down by Microsoft and others as we "speak".
It is not settled, but apparently there are problems which are NOT driver related under windows 7 64x. Evidence is illustrated by the fact that old versions Microsoft Network Monitor which works on other Windows systems including Vista does NOT work under Windows system except in the most recent versions.
As for the best USB dongle wireless adapters, it is the 2010 Trend net TEW-649UB which is supports the newly standard 802.11n and runs at rates of 300 mb rates. The reason, however, is not what you think.
The reason it is the best is because wireless dongles have a bad reputation of often overheating and burning out in a few months, but Trendnet has a 3 year limited warrently on their dongle compared to 1 year warrenty on most other venders' warrenty.