I've had a look through, but cant seem to find an answer.

I've cracked my top tank, and subsequently need it replaced. At this point in time i have a few options:
A) keep current rad (162,000kms old) and just change top and bottom tanks;
B) get brand new tank (either oem or after market oem spec), or
C) get an alloy rad

Is it worth getting a China Alloy Rad?
People who have them fitted, did you experience any issues? I've read 52mm is too thick, so which would be a suitable size?
At this point, im looking at purchasing the following rad cuz its cheap and its alloy, but would like to hear peoples experiences and opinions on china radiators.

China Rad

Also, oem thermostat or any will do?

Cheers