I use the UA system.
I'll have to agree that spell-point systems are not always great. What I discovered, though, is that the flaw isn't necessarily with the system, it's the inherent nature of spell points. Most people who are switching are doing it to get away from the Vancian slot system. In truth, spell points are just quantum spell slots.
Once I made that realization, I found it a lot easier to swallow point systems. Before that, there was just something "off" about point systems. The goal isn't to "fix" everything. It's just to get it to a "good enough" level.