On it!
1. Not necessary, but I suppose you could do it. MFX isn't going to negatively affect estro- levels, but we do often recommend it to pair with an anti-e/AI such as HardFX.
2. Natty? Yes. All good.
3. No PCT needed. It isn't a PH (see #2) and does not shut you down. It works to augment the type of test you're making - to create more free test.
4. 12 weeks on Asteroid, 12 weeks off Asteroid. Time on = time off.
5. There were 3 versions of MassFX - original, Max Strength, and Destroyer - in that chronological order. What's different? In general, the ingredients and a more refined ingredient list. We threw out what didn't work as well, put in what does, then found better stuff - the "Snapple" philosophy, if you will.
Hope that helps! Anything else, by all means, ask away! :cheers: