30 Day Challenge 20: Favorite parallel concept

I'm heading to Wayne, New Jersey for the largest scale model car show in the world. While I will have internet access I will probably be too busy to post so the posts for Friday, Saturday and Sunday are being scheduled. By now I am well into the month of April without missing a day and I am hoping to keep that streak going. When I return I should finally have time to type up the three box breaks I've done since I started the 30 Day Challenge, but the Challenge is what you will be seeing for the next few days at least. 

My favorite parallel concept is a long-running one. My all-time favorite is the Refractor concept. Introduced by Topps in 1993-94, they are incredible. I've never met a Refractor I didn't like. Picking one to show here is a tough choice, because I have Refractors in my collection spanning about 20 years. So, when all else fails, I will show one of the oldest.
Refractors just look like they are glowing from the inside, they look great. The first set that had them, 1993-94 Finest, is some of the rarer ones. I only have 5 of the 220.

I just got the base card in trade last year, I wish I had scanned it so I could show what it looks like as well.
Here's a base card of one of his teammates.

Unfortunately some of the early Finest cards, the skin color of the player is turning whitish or greenish, with no real rhyme or reason for it to do so. At least this one is uniform. Not all are.