Does anybody know what the differences are in using a bulblamp condensor enlarger or one with coldlight. I've heard that two types of coldlight nowadays are available, the fluorecent tubes and the led light ones. My concern is, when using one of the coldlight heads, that the prints are less crispy and shows some lack in the highlights. Can I say that coldlight head systems tends more to a diffussorsystem. Is that the same for both types (fluorescent and led's)? What do you think are the Pros and Cons?