I think it's better if you meet a RM to to the comparison.
Let them do the job. If you don't feel convinced, walk to another bank and find another RM and ask the same thing. By then you should had found your answer.
The market is pretty bad now, I am sure they don't mind serving HDB loans. When the market is good, there are RM won't even serve HDB loans as they are too busy with other bigger loans such as private property.