I have done a simple comparison between a few banks myself.
I compared among public bank, cimb, uob, hong leong, and ocbc.

among all, hong leong seems to give the highest FCFD rates but UOB forex rates is the best in terms of them selling and buying.
however the difference between UOB and HL forex rate is just 0.3% different for both selling and buying.
From this, I think i will go for HL. But they need u to deposit at least RM8K