"...rounded tips that caress the neck".

Exactly. That's what turns me on too, BIG TIME. Like the earlier Linda Evans Clairol post.

Which is why, of the 4 pics on the original post, No. 2 is my favourite, since there is a hint of roundedness at the ends. The other 3 are mainly straight at the ends. Rounded tips are great to touch with the fingers/palm too (up and down motion) - nice n soft!