I was set to buy all of these, then after hearing about glitter migration and grit, thought, "Ok. I can skip these."
Well, because I had to drive all over yesterday appliance shopping with my friend, I made him sit down at MAC so I could play with stuff. So. There.
I didn't feel like these were gritty on my lips alone unless I press them together hard, but do feel like I have a glittery labial fiesta going on today(or like I made out with an opal), so I use the gloss/glass sparingly. It feels thicker and stickier to me, than the dazzleglasses, so I don't really see me reapplying it more than once if that often and only after several hours.
Not sure about the glitter migration yet, so far it's staying put.
I bought Fab Frenzy and Superflash!(because I had fun saying SUPERFLASH! like SUPERSTAR!), and have on Superflash today. It's pretty sheer, so I like it.
you will blind people in the sun if you put gobs of this gloss on, however, but if you are looking for a daytime disco par tay, go for it.
I think it's one of those love it or hate it glosses, and something to try before you buy if you can.
I like mine, final answer. tee hee!