if you plan on doing more of a sps dominated tank should you use a calcium reactor or do a two part dosing method?

i have a simple 75g reef system. tons of SPS acros all over the tank. i started dosing ESV two part like 6 months ago. dosing anywhere from 20-40mls a day of 2part. i do 15-20% waterchanges once a month using seachem reef mix Test results using Salifert...

What do YOU use in YOUR tank? Im looking at my options right now and I found a great deal on a calcium reactor from a guy in my local reef club. Im dosing two part now......and im getting tired of doing it EVERY morning. I would like to have something I can go on vacation with and not worry...