Masteron is best??????

I'm sorry mate but you need to RESEARCH A LOT more.

A basic test cycle with pre bloods and then mid bloods would be more beneficial.

You can control all of this with an AI mate

I think you answered your own question.

first cycle used aromasin and had moderate acne that was bad enough but the second cycle I didn't use an ai and had the worst acne on my face, shoulders my back felt like it was crawling.

Get bloodwork on cycle. Sounds like your AI was doing what it was supposed to but you maybe needed a bit more or ypu were using ugl and it wasnt dosed properly.

I keep my test very low on cycle because of this and it works nicely for me.

Did you ever do any bloodwork to see where your estro was?

I found out over years of trial and error that were all different with acnr. I truly believe a lot of it has to do with what you put in your body. Meaning foods. For years I would always get acne on just test cycles. I tried everything and could never figure out what it was. So I experimented with diet. For me when I cut out dairy I don't get any acne on any amount of compounds. So I could take Dec a test and dbol and not get one pimples. Also estrogen is very important to control. I believe that you are what you eat. If your eating a bunch of dairy loaded up with hormones that shit can mess with hormonal balance and cause acne. Try that out for s month and see what happens.