I'm a huge fan of CND's sticky base coat & shiney topcoat.  The topcoat is not only shiney, but dries fast and gives a durable finish to your manicure. By starting with sticky & ending with shiney, I can get about a week from my manicure when used with OPI polish on natural nails.  I've tried other base & topcoats, but don't get the wear that I get from the CND products.