I purchased these paints when they first released, and felt they had some interesting qualities at the time, but I think the newer paints like Reaper Master Series and P3 have eclipsed them in terms of utility and consistency. The range has some interesting light colours, but it weak in darker colours overall.
They\'re OOP because the company that made them went under, which is more to do with problems with its owner than directly a comment on the product, but either way they\'re OOP and the paints you\'d buy today for that cheap price were manufactured at least two years ago and possibly more, and no new paint for the line will ever be made, so any replacements you\'d buy would just get older and older. Paints can keep pretty well, but exposure to too much heat or cold in a warehouse or during shipping can affect them dramatically. If you have a problem with a Reaper paint, you can return it for a replacement bottle. I don\'t know if P3 is quite as easy-going about that, but I know they\'re working on replacements for some known problem batches.
I own the complete Reaper Master Series, complete P3, complete Adikolor, and almost all the Reaper Pro Paint. I use the Master Series 95% of the time. They are designed for people who use techniques like layering and glazing. If you\'re more of an army painter trying to get things on the table as fast as possible and in as few coats as possible you might prefer looking at P3, Games Workshop Foundation or Foundry paints.
Regardless of which new brand you decide to try, if any (plenty of people get great results with GW paint!), you\'ll probably have an adjustment period of a mini or three while you figure out the ratio of water and some other factors that might be different between your new paints and your older ones.