Hi @jakesnak. Two main differences with the SE: 1) balanced support end-to-end, and 2) significantly more robust dual external power supplies instead of the base unit's smaller single unit.
Audibly, the SE is faster, more dynamic, and has more bottom end slam. If you have a resolving system you'll appreciate the difference.
I'm a van den Hul dealer; feel free to hit me up with questions.
Cheers,
Colin