Thanks for the replies!
From what I have read the two models mentioned by Crake -
the HTC T528w and the CoolPad 7728
are dual stand-by phones like the Samsung Galaxy S Duos.
I would very much like to know how the ZTE U960, or alternatively the ZTE V970 behave in practice.
Has anyone actually used either of them handling two calls simultaneously?
One other thing I like to know is, that since most of these phones are intended for the Chinese and far eastern markets, do the European branches/dealers of these makers give any kind of support, or even guarantee these models?