For a while now brands have come out with these "gel nail colour" polishes that provide an at home manicure that only once a salon can provide, I love them, however some are better others. Out of all the ones I have come across on the high street Maybelline seem to have hit the nail straight on the head in terms of the formulation. These are fairly new I think, I have two shades and both of those provide me with a long lasting manicure that has a lovely gloss finish, plus they are less than £5. The brush makes the application of these polishes so easy, within two sweeps across the nail you're done, and two coats is all your need. They have a good colour selection <would like to see more though> mainly the typical colours like the reds and coral and a couple of blues, although I did only go to a small Superdrug so there will probably be more.
If you can't tell already these are pretty darn good, I highly recommend them, all nail polishes lovers need these... right now.