I'm not made of win nearly as much as the other guys on here, but I'll try to help out, lol.
I really dunno what masterone is, but I know the ECA is effective(minus the headaches that may be had). It sounds like you want to recomp, but, you really can't get rid of fat in ONE area, and then gain wherever else. The best way to get rid of the belly/lovehandles is just a clean diet, cardio, and a lot of patience and hard work. From what I've seen, 80% of the time the only way to really fix it is just lowering your BF%.
How tall/what weight are you, and what BF%? What type of cardio for 45? Incline? Only doing cardio and no weights will help you shed body fat, but you won't be putting on much muscle(compared to lifting at the same time), and may actually lose some(if you overdo it).
Well, I just noticed you have your stats in your profile, lol. What is your BF though? Have you calculated how many cals a day you would need for maintenance? Are you doing macros, or just cals? Is your diet in check?
Your diet is a MASSIVE part of weight loss, so you really want to have it in check(NEED to) before you begin any supplements, they will just waste your money without a diet. They're only supplements(help), the diet is the main thing. After diet comes your routine, how much you lift, when, how long, cardio, etc...
Sorry for all the questions in response to your question ^_^ But if you could answer (most of) those, it should be a lot easier to help you out
