I have been using the MGX for about a month so far, 2 sessions per week and I can't say that I am experiencing any sexual pleasures from it.
However, I did insert it before sex with my wife (she does not know about the Aneros). Once in place it is quite discreet and I was confident she would not notice it. I have to say that the penile sensations were incredible but after about a minute I had to hold back as I was afraid that I would "hair trigger" and spoil the session. Being a gentleman I always make sure the lady cums first but when I eventually turned the attention to myself was disappointed that I could not recreate the earlier sensations and had to make do with the standard type of build up to orgasm.