Questions about Bruticus/Devastotor chinese knock-off's

I noticed that in the Bruticus toy gallery at this site, the G1, G2, Ruination, chinese KO's, and some others versions of Bruticus were shown.
Obviously, someone at seibertron has the chinese ones, so i thought to ask if they are good, as long as one only want's these toys, but doesn't mind not getting sought after collectors items.
Are the chinese Bruticus and Devastator Knock-offs exact copys of the origanals, (they appear to be.) except for the colors/paint, and stickers? and what are they like in terms of qualliy?
...And also, what about the chinese WST combiners? does anyone have those, and could tell me what those are like?
Any information about these would be helpful.
Obviously, someone at seibertron has the chinese ones, so i thought to ask if they are good, as long as one only want's these toys, but doesn't mind not getting sought after collectors items.
Are the chinese Bruticus and Devastator Knock-offs exact copys of the origanals, (they appear to be.) except for the colors/paint, and stickers? and what are they like in terms of qualliy?
...And also, what about the chinese WST combiners? does anyone have those, and could tell me what those are like?
Any information about these would be helpful.