out of the 2 i have i say rodimus. From what it sounds like the favorite all around mold is the rx-8, wrx or the gt
The Mirage/Rodimus mold is by far the sexiest one IMO. He just looks badass. The Hound/Swindle/Rollbar mold is quite unique, being a jeep. It's also lots of fun. And you definitely can't go wrong with Jazz/Shockwave. Alot of the others (especially you, Grimlock/Wheeljack) suffer from really difficult arm wierdness. I can never do that one correct the first time. Jazz is straight forward, looks awesome, and fun. But to pick one, over both Alt, BTs, BTAs, and KPs, just one....Kiss Play Rodimus. That mold looks awesome, is fun to transform, very sleek car mode, very tough robot mode, and it comes with a FREAKING FISHING POLE. You can't top that!
I'd say windcharger. Of the 15 alts I have (took me a while to track down for reasonable prices $12-$25 each ) Windcharger is really pretty easy to transform. And the head is cool. Mine accidentally came with alt prowl's gun. But from what I've heard of windchargers original weapon. The nicked sniper rifle is its biggest falling out. Otherwise track it down. It even has a working trunk. And a convertable mat car top.
This is tough. My favs are the 2 Ford Molds. They have the best posability.....I love the RX8 mold too.....But, lol, Prowl is the number one most stand out/G1 figure of them all. Told you it's tough, that's why I have them all (almost)