Welcome to Pherotalk. 
Ammo is indeed a good start - It is a straighforward, good quality and importantly balanced mix of the three main pheros, Androstenone, androstenol and Androsterone. Which gives a well rounded social/sexy and masculine feel that is usable in most environments.
From your previous pheros - Androstenone is a good basic phero but quality of supply varies and it can be very difficult to use as a standalone. I don’t know “Magnetism” at all, Pherazone is generally regarded as crap and whilst Max Attraction Gold is genuine, there is concern about its quality and that it is very strong - Even small doses send most guys into none-OD, which limits its potential for use to the most sexual environments.
You can further help Ammo along by steering or moderating it with social, status or even other sexual products. However it is best to follow the “Sweet Spot” guide in this thread first with Ammo alone.
That way you find your best dose, which is important with any product containing Androstenone.
After that, you should find:
IS - Adds a happy/feelgood and socially confident layer.
IO - Promotes flowing conversation, a bright/bubbly feel that makes it easier to talk and be talked to.
IH - Good for getting to know people well and bonding or helping “the moment” along.
IG - A smart, smooth/suave status product. Young and sociable as opposed to the more severe/upstanding professional status vibe of A314. Both signal good LTR qualities but A314 is IME better liked by more mature women, whilst IG is more in tune with younger ones.
TUTH - A small amount will greatly increase the sexual overtness of Ammo but IME this is best kept for use around an established partner or when very close to bed with someone. I would generally start a night with Ammo and add-in the TUTH later when any interaction is becoming more determinedly sexual. TUTH can also be useful in clubs/parties and the like with moderation form IO/IS - which will help round-off its sexual aggressiveness.