No argument there 9and7dad - I did couch my comments with the d1 caveat.. JR Legion is not going to get you exposure especially in NH... SR Legion isn't either unless your team is in the state tourney or you're already in contact with a coach and give him your schedule and hope he can some see you play.
If you're good enough from 13-15, then JR legion isn't a bad option. Realistically, how many colleges are looking at 15 yr olds and under? A chance to play against mostly 16-17 year old competition will let you know where you stand if you're good enough to make the team...
Travel ball - especially showcase travel teams will get you the D1 exposure that neither JR nor SR Legion provides. There's plenty of places within parent forums that will give you all the guidance you can handle!