I hear you ... it is a tough choice finding something!
For me, Peter Cullen mixed with Transformers will always be a very "nostalgic" thing. So, I had him sign my Transformers: The Movie LaserDisc back at Botcon '97. And, at this year's TFCON...I'm bringing a mini-poster from the 2007 movie with Optimus' head (which was also extremely nostalgic to me at the time). Very excited to meet him again all these years later.
Also ...
Chigimus, I'm not sure if this will help or if this is what you were looking for. But, just in case I snapped a few pics!
Chris