I've had great success with iFixit guids too. 2 iPhones and a iPad. But I've been a bit weary of doing that since last time I got a screen where the connection wires that came with it weren't quite right and caused the iPad to get hot enough to burn skin and cause heat warnings from the OS. In that case, it was possible to reuse the original connector to fix the issue, but my trust in third-party parts diminished quite a bit.
