Hi!
For the Ontos and the HF gun truck crew I have the same solution. Either Hobbyeasy or Lucky models. Both are Hong Kong based and have good prices on Hobby Fan and good service. Hobby Fan makes an Ontos, I've never seen it myself but it's said to be really nice.
http://hobbyeasy.com
http://www.luckymodel.com
Cheers!
/E