It's worth listening to them for yourself. Which one do you like better?? They are both prized vintage systems. I would go with the 130A system. From maintenance point of view original JBL re-cones are not available and with these systems you want to keep them original so they hold more of their value.
The LE-15 has surrounds that harden with age and most likely need to be replaced now unless they were re-coned. A re-coned speaker will have a foam surround. Even with a foam surround it will need to be replaced at some point. An original would have a Whitish Yellow surround.
The 130A's have a black doped surround and don't need to be replaced. As long as you don't over power them they should last for years to come. They may sound a bit bass shy compared to a more modern system. Just add a subwoofer if you feel the need. Don't add bass boost/EQ as you are asking for trouble if you do. They were designed when bass was 40Hz or so not for modern bass heavy tracks.
Rob
http://www.lansingheritage.org/html/...alogs/1962.htm