Yaya. Mediatek...
I've bought once RN 3g running Mediatek SOC before. No more Mediatek from there on...haha

I do have a supplier and he is located in Cheras. However, he only supply to resellers. I got to know him through a friend and he only sell to me cause I told him I am fixing phones for charity. Cause he sells in volume.

Alternatively, you can buy from Shopee. Some are cheaper and some are more expensive. You have to compare yourself. It is not really that much cheaper from my source unless I take in larger volume.