I don't see much idea comparing std. class ship to older 18m ship. Having flown both, LS has smaller fuselage, heavier ailerons but is gereally nice glider to fly. Ships this old start to require some maintenance. D2 is has bigger, very comfortable cockpit, is more sensitive and nicer to fly. Performance is pretty similar for normal sunday pilot (ridiculous DAeC index difference notwithstanding). Both are modern gliders that always need water ballast to really go well. D2's higher wingloading evens out the advantage of LS's longer span here. I quess the decision would be based on trailer, instruments, paint condition, price etc.