Don't forget that halogen 50PAR20's are not being made any more. So stock up if that's what you choose. They produce about 2800k light and there aren't any LEDs that bright and that warm in color that I have found. Well, there is one that HD carries that's close, but it is a 180 degree spread bulb. Not focused at all. If that works for you they are decent alternatives to 50PAR20's. The Other LED's will destroy your colors. That bluish light doesn't play nice with beige and browns.
Very good to know. Space has first hand experience with lighting issues.