Superbalm is wonderful on the nails and cuticles - as is, I'm finding my A'kin Rosehip Oil, really does them good.
I've also recently found Burt's Bees Lemon and Almond Cuticle Butter, been using it twice a day and my nails and cuticles have really improved...
Pro-strong I found a bit...meh. I had inital results from the flouride strengthener and then it just seemed to stop working. I've had the Manicure in a Bottle too, and that should be done under the trades descriptions act, as no way is it that. You do need a base coat and topcoat with it and it still peels off. It's a lovely subtle colour tho.