Ivory is the best. One of my favorite things about it is that it isn't scented, and doesn't attract mosquitoes and black-flies the way some of the cloyingly sweet and fruity scented soaps tend to.
Careful... They did release scented ivory and I accidentally bought some, worse still it was lavender and packaging was only barely different.
I've tried Ivory in the past and it was too oily for me. YMMV.