i have 2 favorite models the helix and the tempo. After using the helix and realising how much pressure our muscles put on the thing I wondered why the tempo or the paradise for that matter have ever slipped in without the tabs say like the helix has. A couple times i thought i could feel my tempo being sucked inside me but it didnt. I understand theses 2 different models are supposed to be used for different reason but at the same time the same effects can be felt with both or thats what i have found. Anybody ever had problems with the tempo or the paradice before?