>>5278058The recent hasbro masterpiece if you want to keep cost down yet something impressive, check your TRU/toys R us.
The Japanese/Asia re-release is mp-11 an comes with better qc, cape and crown, the hasbro one (box says mp07, they use a different numbering system outside of japan) with some iffy bits here and there (I had to reassemble one of the hands and have to force apart the chest to transform him), this is the best for a large scale starscream in g1 flavor that is also recent.
If you want something smaller you'll be paying a bit too much for it regardless of the size and price, but I do have a sot spot for the deluxe scale, specifically the movie starscream f22 (though the jp release is cleaner) or pic related, universe starscream, there are triple packs with all 3 of the guys in one box set on ebay if you got the cash for the best g1 look, otherwise the classics/universe (universe pictured) or the henkei henkei japanese release (more gray than the classics pictured but has spiffy chrome missile launchers) could also work.
Similar for red alert as well, the masterpiece and universe red alert deluxe, I do admit I'm bias towards mp and universe but they don't have many lines that work for pure g1 aesthetics, otherwise you may need to hope other anons can give good input with other lines.