Looks like a very good option. I don't see any major shortcomings compared to the 4PX. The S-FHSS and T-FHSS receivers are less costly and I have not found any measurable performance difference compared to the FASST receivers. It has plenty of model memory, telemetry and supports S.BUS. The only option I don't see listed but probably is there is 70/30 throttle split.
It does look like it has one or two less extra knobs compared to the 4PX.