I forced myself to work with MPLABX over the past few days. I needed a combination of features only found in the PIC16F18426, which is too new for PBP3. I'm building the software in ASM using MPLABX. I like the Debug feature. As I'm not that familiar with ASM, the Debug showed me where I got stuck in an endless loop and helped me catch a few other problems in my code. It's taking me about 10X longer in ASM than it would in PBP3, but I'm learning a bunch through the experience.