If you only buy one pheromone, I would recommend you get mx135. It’s an all winner. It’s a beautifier that women are not threatened by. Random women actually talk to me when I wear this. If you use it with IH, it will make them actually feel like they have a connection to you, and might deepen the conversations they have with you. P86 is another one that people respond very well to. Both mx135 and p86 have that “like me” quality to them that attracts friendly people to you. Instant Shine will get you attention too, in my experience it made me bolder and more outgoing. It made me feel very comfortable doing things that would get me attention. Where as mx135 gets you attention without you having to do anything to get it. I find people staring at me, sometimes nonstop. Like all attention is on me when I’m just sitting there. p78 is another one that gets you friendly attention from women, sometimes they follow me or stand there looking at me, waiting for me to talk to them. They are super friendly when I start talking to them. P91 is another one that makes women want to be around you and makes them very friendly. I once combined it with mx135 to a meeting. This one lady literally RAN to chase me down, was all out of breath when she got to me just to introduce herself. 
They’re all great choices, what works best for you will depend on your personality and social environment. Good luck, let us know how it turns out for you.