I use OCBC in Puchong. RM1000 with no referral. Cute account managers, fast service, and I just gave them the printed Borang D from SSM.
I have the ATM card, the Phone banking, the Islamic account (for good interest!)
If you are working full time and decide to do some freelancing on your own free time, it make sense not to register as a business entity.

However, if you were to do it full time, you should register your business. COmpanies prefer dealing with business instead of individuals because of taxation audits. They may get into trouble as giving money to a person's personal bank account can look like corruption just to avoid tax.