I've listened to the Vincent extensively and was very impressed--its huge advantage, of course being the tube preamp stage. Really, really nice balance and detail. I've also heard the NAD M series amps, albeit briefly, and recall thinking that they weren't significantly better than NAD's less pricey mass-market amps.
As for the whole China debate, it seems that globalization has taken such hold of the audio industry that it's becoming very difficult to ascertain precisely where gear is assembled or where components are sourced (I've read, for example, of differently-branded high end amplifiers with almost identical Chinese-made guts varying in price by as much as 300%). To reiterate others' advice, if you like how a well-reviewed piece sounds, buy it irrespective of where it was screwed together.
As for the whole China debate, it seems that globalization has taken such hold of the audio industry that it's becoming very difficult to ascertain precisely where gear is assembled or where components are sourced (I've read, for example, of differently-branded high end amplifiers with almost identical Chinese-made guts varying in price by as much as 300%). To reiterate others' advice, if you like how a well-reviewed piece sounds, buy it irrespective of where it was screwed together.