>>8076403That's actually an interesting idea, and something I personally attempted way back when Starscream, SKywarp and Ramjet were the only actual Seekers from Classics. Barring the obvious classics molds and the upcoming Earthrise stuff, going off the top of my head, mostly they end up being movie bots.
Starscream: Either the Prime version or the Generations WFC Deluxe version, both have their benefits. Prime Screamer has the weedy, sniveling, theatrical look Starscream should have, but the WFC version has those gorgeous G1 colors.
Skywarp: Whichever version of the Prime/WFC you don't use for Screamer. Personally, I'd go with the WFC version as the dual miniguns seem to fit a grunt like Skywarp more then the slick schemer type of Starscream. There's also the option of going with the DotM Deluxe version so he can match T-cracker.
Thundercracker: DotM Deluxe Thundercracker. A repaint of Movie Starscream, but his colors are fantastic and he comes with a chainsaw gun, which is perfect for a thug like T-cracker.
Thrust: RotF Thrust, a repaint/remold of the Breakaway mold, but I feel he works much better as a villain. Very hunched and seedy looking with a kick ass, but tiny, built in arm mounted minigun.
Dirge: RotF Dirge, a fantastic and unique movie deluxe. He's got a great jetmode, a fantastic head reveal and just pulls of the whole creepy look Dirge should have.
Ramjet: TF07 Movie Voyager Ramjet. A larger, blockier bot, but fitting for Ramjets "Fly into things hard" personality. Also, there really aren't many options for Ramjet.
Again, mostly movie bots, but you can more or less have size uniqueish bots while still having all the Seekers. The Classics versions for any of em are easily the best choice outside of price restrictions of course, but if you want variety, it's there.