I think that it depends on the player. A star player is desirable in either and some player specific collectors may pay more than they would for a major league item for a minor league one as those are harder to obtain and there is less of them. If a guy plays two years in minors and 15 in the majors there are many, many times more major league items. Other people like myself only collect major league items because we only buy one item of each player. I am even more restrictive in that I collect almost exclusivly items from a player's best years.