The huina excavators with a lil modification can be GREAT machines! The Bruder conversions are good machines as well. For almost a year PNWSTE had ONLY a Bruder tracked loader as our primary loading equipment. Several videos of converting the Bruder toys to RC can be found on my YouTube. I post weekly videos of our clubs RC gatherings there as well.
https://www.youtube.com/channel/UC_j..._as=subscriber