I personally find these P2 nasal pillows mask the most comfortable - have also tried full and partial masks but didn't like those as much. Only downside is that unfortunately the nylon straps do wear and stretch over time. I'm not aware of replacements for them?
I have purchased and tried all 3 types of mask - full mask, nasal mask and nasal pillow. My favourite is this nasa pillow, it is now the only type I use.