So far

Legacy Iguanus - Really fun for a small figure. Characterful, neat transformation, great colour choice. Weapon is a bit garbage though.
Legacy Blitzwing - I dunno. Looks great in robot mode. Acceptable tank mode, shit jet mode. Fun to transform but I just don't like it.
Velocitron Shadowstrip - Colours really pop. I hope that the rest of the set has the accent colours picked out in a metallic paint.
LS-02 Agitant (oversized Studio Series Starscream) - Absolutely gorgeous and I love the mold improvements (more articulated hands, ankle tilts, and more involved chest transformation). The plastic doesn't feel... great? It feels a bit rough, and not super dense.

I picked up and then put back down Velictron Scourge last night.