Mach II has a larger compressor and has a lot of other things such as lcds and a more flexible hose and it has maybe around 10C better temps than a mach 1. YOu can easily get a mach 1 modded for around $250 and it'll get around -60 to -50C loaded. I was planning to get my mach I modded but i dont know now since i kinda want klipsch ultras or a a64 setup
