I have friends who have dealt with several Singaporean resellers and were happy with their purchases / transactions. Unfortunately I am not comfortable to recommend them here as I have not personally dealt with them. Perhaps do some research on resellers within as well as outside TPF and request for some feedback within the forum?
My personal transaction with a Jakarta-based one was smooth but I would have appreciated more honesty during the negotiation, something which came to my attention after the fact. I may not deal with this one again.