We used the bear claws for a year or so and loved them. Felt like it cut our pulling time in half. They are very stiff and sturdy.
We have changed our pulling technique though. When discussing Bear Claws in a post a while back, someone said they used their Kitchen Aide with the paddle attachment. Upon trying it, we discovered that our pork is pulled in seconds, literally. Only bad thing in using this technique is that one can literally turn their pork into mush if left in too long. We kind of pulse ours and watch it carefully.
Back to the original question; I feel the Bear Claws are well worth the investment. Some swear by this, some swear by that. Use whatever suites you best. You're the one doing the work