I'm assuming not a whole lot has changed but I had one of the originals (not McDermott). It performed very well jumping, but I never got the feel for it breaking. Personally, I also never liked the coating that was on the shaft.
They are very nice cues though and I believe there are many more people that like them versus those of us that didn't care for them. They are quite popular and effective, it just wasn't for me personally. I don't think you could go wrong with purchasing one, McD's customer service is very good. They'll take care of you.
I'm not sure if there have been many changes to the cue since I've had mine, but hopefully this will help provide you a little information.
Good luck in your search.
Craig