We've sold quite a few pairs of Combos w/LED, and I think it ultimately comes down to personal preference. If you want understated performance, and something that's more subtle, they probably aren't for you (the black finish would probably be better in that case).
If you're the kind of person that likes attention, get the LEDs, although be aware that they're invisible during the day, so it's only at night that you can tell any difference from the standard T-Series Combo.
Jason
www.wakeside.com