For me, I’d have to say the self-effects are probably more noticeable than anything else. There’s definitely the kick-ass, don’t ask questions, cuz I told you so type of feeling with MX300. The IS/a is similar but more of a vixen, dominatrix type of confident and more sexy feeling. Here’s my lame attempt at an even lamer (is that a word???) analogy. (BTW, this is what’s in my mind, not necessarily what I’m actually wearing. I’m weird, I know 
).
No pheros: Suit, pumps, down to business
MX300: Suit, stilettos, down to business, people defer to me, less cattiness/pettiness from female employees who are typically “the bitches” in the office; another thing to note is that I feel almost an emotional “disconnect” with MX300/MX134. For example, usually I tear up if someone I know cries because I feel empathy for them, but when I wear this stuff, I’ll just pat their hand and hand them a tissue with no tear even on the horizon (actually had that happen more than once). Whenever I need to confront (and/or comfort) one of my female employees, I ALWAYS wear MX300, seems to take the emotion out of it and remain in control of the situation.
MX134: same as MX300 but I, too, feel that either the mix is not as strong, or that the diffusion isn’t as fast, long-reaching, or last quite as long as MX134 (I’m still working on trying to figure that one out). One thing that I noticed is that I used to get a lot more mirroring from others with the MX134 than I seem to get with the MX300 so like I said, maybe it has to do with diffusion rates and distances of the different Neroli. IDK.
IS/a: Suit w/ skirt instead of pants (cuz I think I look damned “fine” in it!), RED stilettos, and a secretive little smile on my face because I know what I’m wearing (or NOT wearing) underneath my suit! I still get the in-control feeling. I can wear this to work and have found it works better with IShine around the bitchy women at work and have pretty good interactions with them, but if I wear too much, then they get really catty again. With MX300, they may THINK it, but they don’t verbalize it like with IS/a.
I really like mixing the two (IS/a & MX300) because I think it displays a higher-value status than each do separately. And I almost always use them with socials, particularly Shine and Openess, to soften the “I’m a woman who knows what I want and gets what she wants” kind of vibe that this mix emits. They definitely make the combo more friendly, approachable, and connection-worthy. Seems a little standoffish without the socials in there, which would probably not do well in a dating scene. BUT, word of caution: adding the socials to it will attract EVERYONE, from all calibers, even those men who would normally not “dare” approach such a DHV will be more apt to or even eagerly interact with you. At the sake of sounding snobbish, you have to be choosy in the kind of guy you want cuz a IS/a+ MX300+socials mix will make you very attractive to all. I think people are by nature attracted to those individuals who seemingly have it “together”.
Sorry for the long post, but once I started I couldn’t quit…too much Openess for River today, apparently:o 
should go get some more soon)