Personally I think the single cam versus binary cam argument is a personal one... You have to decide for yourself... Here is a good website to help understand the difference... I have found it quite useful.

http://www.huntersfriend.com/bowselection.htm

Single Cam vs. Twin Cams
This is a hotly debated issue in the industry. It seems that serious archers who already have a preference for single vs. dual cams, will fight to the end on this debate. Since the invention of the first dual-feed single-cam, by Matt McPherson in the early 90's, virtually every bow company has feverishly worked to develop and perfect their own single cam systems. Though two-cam technology continues to improve, single-cam models have continued to gain market share and are today's popular choice in the US (though significantly less popular abroad). In spite of their popularity, it should be noted that single cam bows are still a relatively new phenomenon, and it may be premature to conclude that twin-cams are a thing of the past. Because as we all know, designs come and go. Only time will tell if the single-cam bow is indeed the superior design. And with the recent rise in popularity of the Hybrid (AKA Cam & 1/2) systems, the puzzle gets even more complex.

Perhaps the most notable advantage of single and hybrid cam systems is the lack of cam synchronization issues. As a whole, bowhunters favor the "keep it simple" philosophy. Checking and setting cam synchronization on a twin cam bow, though not a big job, is fairly technical. It is also an inconvenience many novice archers and weekend bowhunters would rather avoid. And while single and hybrid cams do need to be timed properly to achieve best efficiency during the powerstroke, there are no synchronization issues to negotiate between two identical opposing cams. So the single and hybrid cam bows generally spend a little less time in the bow-press. Twin cam systems require a little more maintenance to stay in top shooting condition.

The demise of the twin-cam's popularity has brought about one pleasing side effect, however. Many twin-cam bows are now offered for significantly less money than their single-cam counterparts. Particularly with entry to mid-level bows, you may find the twin-cam versions to be priced $30-50 less, even though their performance specs are very similar to the single-cam versions of the bow. Archers on a budget may find that their archery dollar can be stretched a bit further by purchasing a good twin-cam system.