hi sifu, so i am interested in IPO that i see from my e-banking website. in order to purchase that, I need an CDS a/c.

does it matter which ADA i goes to open a new CDS a/c? if it matters how do we choose?
i look at RHB and it has this RHBInvest and RHBTradeSmart, which one is this to open a new CDS a/c in order to purchase IPO?

or if we walk in to ADA office to open CDS a/c a better option?