I love the little squeezy bottles Reaper and Vallejo paints come in- so I ported my citadel pots over to squeezie bottles. Big ones.
These are handy, but you do need to clean the nozzles and caps out now and again or the thicker paints jam. The benefits are good- it takes a moment to snatch up a color, whip off the tip and put a small drop on the palette. Another benefit is that I can get several jars of common colors into the bottles, so I never run out of black, white and catachan green.
Recently I have tried a few other bottles so solve the clogging problem- and flip top caps work best- as they have a little peg that clears the hole. You can see the type I am talking about holding my home made wash in the undercoating tutorial page.