A really good professional nail polish is OPI ( I am thinking Regis Hair Salons sell OPI nationwide). They got some really neat colors and it lasts a long time too. Every time you paint your nails you should always use a layer or two of clear topcoat. This should last at least a week if not a week and a half with maybe a touch up on the tips a bit. I do like Sally Hansens products too. Just dont like the nail colors as much cause ~ well excuse me.. but the colors look oldladyish lol.
Makes me sad I cant do this anymore. I've got my nails bitten down to nothing from stress and cant afford it anymore. Waaaaaaaaaa!!!