Don't have one. I bought all my holy grails, got bored with them & eventually sold them. I'm totally past the holy grail BS. Now I just have a bunch of crap that takes up space.
Wow, you are just Mr. Sunshine aren't you? Between this post and the one about how Wheeljack is ruined forever cause he has eyes... Does anything in this world give you any joy?
I think the Holy Grail of what I have so far would be SDCC Bruticus. FP Colossus is a very very close second. As for the ones I DON'T have, it's a tie between Warbotron and Quakewave.
Are you asking what's our holy grail that we already own? Or what is our holy grail in general? I suppose if a "holy grail" equates to "the most expensive TF I ever paid for," then I guess that would be a cross between Liokaiser and Botcon 2006 Optimus Primal.
My holy grail wasn't even a transformer. It was a Tonka Hand Commander airplane. Had one when I was a kid and I LOVED it more than any of my official Hasbro vehicles. Never knew what it was called or who made it until about 7 years ago and managed to snag one off of ebay.
BotCon 2006 box set and the Darksyde Megatron / Waspinator 2-pack. That's it. That's my grail. It used to include MP-10 Optimus, but I'm getting the reissue. Used to include Metals Megatron from BW, but I have him now too. There's not many things I need to have.
Mine's quite a strange one: Revenge of the Fallen Legends-class Arcee. I already have one, but I'd like to have two more so I can paint them as Chromia and Elita-1. Since Hasbro never brought out that HFTD Sideways Sneak Attack set containing actual Chromia and Elita-1 repaints I've decided to just make them myself. But I've found that Legends Arcee is really rare, and whenever one does pop up on Ebay they're going for Voyager-class prices.
Mine was Fortress Maximus.....never got him as a kid, he was the only one I never thought I'd get. Thanks to the reissue I finally got one! I haven't really got any "holy grails" left, just a few things I'd like to get (Feral Rex, Quantron) but there isn't the " I gotta have it no matter what!!" feeling I had with Max. I actually just cancelled my preorder of Quantron because right now I have other priorities....