Hi guys, I am rediscovering the Aneros smaller models in a new, more exciting way these days. I will be brief in saying that Eupho Syn and Helix Syn have that soft, daft touch which make my educated prostate and anal areas with surrounding musculature turn wild with erotic delight. Eupho Syn is slimmer but a little longer than his older brother, Helix Syn. Eupho Syn like Eupho Classic dances when I use him. Also I like how Progasm Junior "locks" in place...