If you are used to Maya, I can recommend Maya LT myself. It does have one huge problem in it though (thats not FBX export since you can get around it very easily), and thats the lack of PhysX cloth simulation support that can be used with the real Maya. UE4 can support Apex clothing, Maya does so too, but Maya LT does not, and that makes all the clothing animations/simulations a big pain in your workflow. Especially since Maya LT If you only have robots in steel world, it wont be a problem though! 
Still, for modeling and rigging and animation, Maya LT does it job well enough imho.