I also bought a bottle of the “revived” Crystal Pepsi when it showed up at the grocery store last summer, and did enjoy it, but never felt compelled enough to get another before it disappeared again. I had liked it as a kid during the original era in the 90s, and it did seem to be the same from what I remembered.
However, my personal favourite was Pepsi Blue. Just recently, I reclaimed one of my old forgotten unopened Pepsi Blue bottles when my parents cleared out an old storage space, so here is my contribution:
Expiry date is missing or faded, but I would imagine it would be late 2004 or 2005. No, I will not be drinking it 
Apparently Pepsi Blue is still available in the Philippines (trivia: the former home of MSN Messenger e-mail support), but Mountain Dew Voltage is pretty similar and I treat myself to that every so often. I had a bottle of Voltage the night Microsoft’s Messenger servers went dark last May 