Purdy paint brushes are in investment that will pay off immediately. I won't start a painting job now with out these brushes. Take the time to clean them well (including using a wire brush or comb to get the last of the paint out) and these will last years and many, many paint jobs.

There are paint brushes, and there are Purdy paint brushes. Spend the extra cash, buy a Purdy. It'll save you a lot of "oh, I gotta touch up that bad paint spot."