The Definitive Laserdisc set is one of my favorite releases of all time for the OT. Before DVD took off, I always wanted a Laser disc player as the format was really for movie buffs with almost all of them presented in widescreen when at the time most VHS releases were all cropped. From what I've read, when they put out the bonus DVD discs of the unaltered OT, they just copied the laserdisc versions and called it a day. The main problem with the format though is having to flip the disc every 30-60 minutes. Later on they did make players that could read both sides, but I think even today those command a premium.
Glad to hear you picked them up!