I dunno, I wouldn't use them for the threshold effects as they cause really shit nausea and a whole lot of body load. I'm not going to even talk about the vasoconstriction and everything else that comes with it
I recall a semi-trip with HBWR seeds on which I ended up on a website about people that hear voices in their heads :/
every time i've done enough MG seeds to feel anything (350 to 600 seeds) i felt heavy in a very relaxing way and very slight euphoria more just a little happier