Technically, the Binaltechs are mostly plastic ... there's just certain car panels that are die cast. The robot figure itself is all plastic, exactly like their Alternators counterpart.
Also, the line isn't/wasn't overpriced ... you're just too late in starting your collection.
Paint jobs aren't sloppy on the BT's either. They are just prone to chipping. The Kiss Player Convoy and Rodimus have GREAT paint jobs, for plastic figs.
Mustang GT die cast parts:
- hood
- fenders
- doors
- entire rear of car (except windows of course)
I guess it would just be easier to say that the roof is the only plastic car panel.
Ford GT - there is no die cast version
Ram SRT-10 - Prime/KP Convoy/ Nemesis Prime are all plastic, but wonderfest black convoy is mostly die cast from what I've heard. Somebody once told me that he is unbelievably heavy, so there must be a lot of metal on that figure.
Viper die cast parts-
- hood
- fenders
- doors
Jeep die cast parts -
- entire front end of jeep
- doors
RX-8 die cast parts -
- entire front end (except trap door for head)
- doors
- rear of car (minus the trunk)
Subaru- (already covered by Frostic_Prime)
Scion xB die cast parts -
- entire front end
- doors
- small section of the rear end
S2000 die cast parts -
- entire front of car (hood/fenders)
- doors
- can't remember if any of the rear is metal. I'm away from home, so I can't check.
Jaguar XK and Honda Civic Si - there is no die cast version
Vette die cast parts -
- entire front end
- doors
Acura die cast parts -
- entire front end
- doors
- entire rear end
I'm pretty sure that covers it. Note that when I say "entire front end" ... I don't include the bumper of the jeep, grille of the RX-8/Acura/Mustang ... etc.
This should be pretty accurate, but feel free to make corrections on any mistakes I've made. I would've pulled each BT out if I could, but I'm not home.