The case is sturdy. I'm satisfied with the protection it offers. Some have complained about the LEGO letters rubbing off of the nobs near the corners, where it gets the most handling. While this is true, it does not diminish much from the overall impression Given by the case. No one doubts, indeed it is LEGO, and get's that close to my case to see this. At any rate, if you're building on the case then A) it protects the case itself, and B) it does not matter.
I will not upgrade to iPhone 6 until Belkin makes another LEGO case.