Let me put it another way then. I syarted out shooting compounds 38 years ago. Back in those days bows had stell cables so there was very little problem with "wheels" going out of sync.
Sometime in the 80's the transistion came along to fastflight materials and the problems started. Although fastflight did creep the real problem was the lack of quality of string/cable making in those days. Neither were prestretched and served under extreme tension. Therefore they did creep and being hand made no two were the same so they crept at different rates.
Along came the single cam bow which was supposed to be the god's end of all these problems. It did take care of cam sync problems, but people didn't realize that strings still crept and single cams could go out of time, which changed the tune of the bow.
So all during this time string materials and string making have improved to a point that either cam system has little problems these days if quality strings are put on the bow in the first place. Some companies still cut corners when it comes to strings.
I shot dual cam bows up until 1998 when I got my first solo cam bow. Finding just as many problems with the strings the bows' tune kept changing so it was with great pleasure that I wnet back to a dual cam system when I joined Martin in 2004. I can honestly say that I can't remember any of my dual cam Martins going out of sync to a point that required more than a twist or two in a cable to correct them, and haven't had any bow with the Double Helix Elite (Stone Mountain) string change to date.
I used to replace the OE strings right from the start, but have been shooting factory offerings on the Pro Shop series bows just to see how good they are so that I can answer questions like this. Besides, I'm cheap.
The strings on the 2011 Pro series bows are supposedly even better so I would not let this deter me from getting a dual or binary cammed bow.
Hope this helps you with your decision.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver