Wilson,
do u want to monitor or do u want to have a fuss free ph control system. More cluttery with cr and co2 if u choose the latter. Hopefully u already have a solenoid and is ready to top up co2 from time to time. For simplicity, I will just go with pinpoint and perform weekly cal dosage. Personally, I would prefer to know what's happening to my tank and do manual interventions if time permits. Go with pinpoint, cannot be wrong. Just that u are reccommended to change the probe every 18 months.