I have the opportunity to buy myself a class 66 from Bachmann and I'd probably get the Freightliner livery however it seems there are two versions of it detailwise!
One of those has metal handrails and one has plastic ones. Why is that? Unfortunately I can't examine closely any of these and I was wondering if there are other differences between the models? When it comes to price both are similar so of course I'm trying to get most for my money. I am mostly interested in the details.

Thank you!