I have long, but very straight, lashes, and I cannot abide lash curlers. I do have one of the heated ones, which is OK, but for dancing purposes I need all the curl I can get.
I was impressed with L'Oreal's Le Grand Curl but replaced it with Lash Architect, which, while gorgeously thickening, didn't really curl as much as I wanted. And what of Maybelline's Sky High Curves? Or that new one that gives you "panoramic" lashes?