Some nice souls over at Flexbeta.net have taken the liberty to compare and review the top anti-spyware programs on the market, namely: AdAware, Spybot S&D, SpySweeper, SpyHunter and SpyRemover. With spyware on the rise they wanted to see which spyware/adware removal tool worked best under an infected machine. We placed 5 spyware/adware scanning and removing applications head-to-head to see which one gave the best results as far as finding the most infected objects.
Article here.