A little sample to think
Bank A: Is a licensed bank with clear financial statements, well established, well capitalized, regulated, operated in accordance with the law, audited, controlled. In order to open an account with this bank, you need to come personally with the passport and proof of address. You will need to show this bank the explanation of each of your transaction. You will need to proof that your funds are from legal sources. You will need to pay a commission for each transaction.
Bank B: Incorporated in banana islands, not regulated, owners and management are unknown, capitalization is unknown, has not any legal presence, headquarters address is virtual office, telephone number is VoIP phone. In order to open an account, you just need to provide your e-mail address. Anyone can bring money to your account in any amount. They will pay you bonus for every transaction. You do not need to explain the purpose of transactions, you do not need to proof them that your funds are from legal sources.
Which bank you select?