I have a mixed reef and the best growing SPS are def monti caps and encrusting,any and all birdsnest,and digitata montipora.. Just got some Rose Mille frags a week ago time shall tell..
With a mixed reef it's a balancing act on nutes.. Too low LPS and zoas in my tank are not happy. Too high and SPS are not happy. You will find out what is best for your tank as all are different. With mine acros are the most difficult to keep happy in my tank parameters although I have a ORA tri color valida that has amazing color compared to other acros that are slightly browned out. Green Slimer does well too. Good luck on the mixed reef..