[Frank Richards]

Personally, paint problems on figures, especially on so called "collector-aimed" figures, drive me absolutely crazy. Absolutely. Crazy.

I obsess over them and often spend WAAAAYYY too much time needlessly focusing on tiny blemishes. Unfortunately, paint and QC issues are just an unfortunate aspect of our hobby.

Like Trivial Psychic said, sometimes holding off for a figure with better paint means missing out on that figure. Sadly, that happened to me with a few of the figures from ToysRUs's rare Jubilee wave of Marvel Legends.

My approach is to pick the best looking one available at the moment, and do my best not to obsess over whether or not ones I may see later have better paint. Honestly, sometimes it's a struggle, due to my obsessive personality.
On occasion, I will pass on a figure in the hopes of finding one with better paint if it's a figure that I feel absolutely certain I'll find again. Today, for instance, I passed on a Thundra from the Hulk Buster wave, since I feel that I won't have any trouble finding another one, possibly with better paint, in the near future.