Yeah, I got mine (the Ultra Magnus replete with CC set) a while back too, and he/they was/were totally worth the wait and hefty cost. My current plan is to eventually sell off the MIB CC set and Henkei Magnus I've now got spare as part of a Henkei/United '86 Movie main cast set, but I'm still missing a few characters.
I haven't opened the G2 Combaticons yet (and to be fair they weren't really a 'grail' so much as a 'want'), but thanks to Hursti they've been acquired as well.
I'd quite like a BW Tripedacus set, but it's more of a 'want' than a 'Grail'. I am sorta chasing an Overlord, but it's more to complete my LSotW main characters set than 'cos I really want it in and of itself, so I probably wouldn't list it as a Grail either.

The only thing that really qualifies as a 'grail' as such for the moment are the MMC Feralcons, and even then I'm trying to wait for a probably-eventually box set. If we're allowing 3rd Party stuff then by all means add them in, otherwise I'm Officially TF-Grail-less.