Wow that's a tall order!!
They're all pretty much stellar, but things like Best Coast off of Stick It,
Time Check off of The Roar of 74', the entire Live in London from Ronnie Scotts club, that has Dancing Men, Time Being.......
I had the good forune to see Buddy close to 40 times over the years and the live versions like most things are always the best. Having said that, try and find the live stuff on Itunes like, In A Mellow Tone recorded live in the early 80's.
The Porgy and Bess medley jumps out too, pretty much the whole Swingin' New Big Band album.
The live version of Just In Time is a great cut..... the list goes on.
I know as Buddy said many times, every drummer out there owes Gene the biggest debt of all for bring the drummer out front, and he was also just a really nice man who put on an amazing preformance very time he got behind the set.
As we all know very very different in terms of technique, but you still have to appreciate what Gene and Buddy brought to the art in their individual styles.
We'll most likely never see anyone of Buddy's talent, drive, technique humor and passion in a very long time if ever.
You'll have fun running all these tunes down and won't, like all of the Buddy fans out there get tired of them, actually you'll play more and more as times goes on.
Enjoy!!
BGT