well the tronxy should be better quality - though there are so many things that's dependant on - you can't really say. the so called 'salmon skin' is neither here nor there. doesn't usually effect prints and looks fine to me. It's just something else for whingers to whinge about.
Dual z screws, the filament holder needs to be moved to the top of the frame. Looks easy to level the bed.

I'd probably go for the tronxy - as long as it had a heated bed. That's crucial.