i use tamia basic and its fantastic, you can add some nailvarnish remover to it to prolong its life and you can smooth it out with a brush diped in nailvarnish remover, it will last a long time when you mix it with the nailvarnish remover. i managed to fix 11 figures yesterday in about 2 hours ot more with the bit i mixed. it also sands realy smooth and is easy to sand