I love the neutrogena nail enhancer pens. They're not polish, but my nails used to break, chip, peel, and ever since I took breaks from polish and started using the pen, I actually have to file my nails back they grow so much better.
for toes: who knows. I had so much MK polish that I haven't taken a lot of time to buy polish, but OPI and Essie are wonderful.

Loreal has a new pro line w/ flat bruses instead of round, I think i might like that better, so I plan to try that.