Masteron vs Proviron ......

Currently running 50mg Proviron qd with deca 100mg/week, test 200mg/week, & Primo 300mg/ week on my cruise. I have Masteron on hand, & thinking about switching over. Any thoughts?? I'm about 10-11% body fat 181 lb & 5'10", getting ready for the beach end of July lol.