I was using the Sally Hansen for a while, the hard as diamonds or whatever, but I found something I like better.
They offer one called hard as wraps, its clear with vinyl in it, so it adds strength and thickness to your nail. I have thin nails, so they are like razors, this helps keep them from being so sharp but also strengthens them so they are not so rubbery.
I just clean them up and out one coat of this, it works well for about a week, and I am HARD on nails. It's not super shiny, with only one coat, which is good, I don't really want it obvious right now anyway.
Oh it dries fast too.
For color Maybeline makes colors and clears that dry in literally seconds. Look for the 60 second polish (it's more like 20 seconds). Others take too long to dry and I mess them up. I hate waiting for my hands to dry. This stuff usually only needs one coat of color, where some others take more. It may cost a bit more, but the less less you mess up, the less you waste, same with coats. In the end, buying better polish works out.