I'll be the odd man out. I've had my business acct with my bank for 5 years. I opened it at Chase, I have never had an issue in anyway. Since I opened the account, I have started working at Chase. So I am very familiar with the banking services that I use. As far as interest, big banks don't pay anything worth considering.
The things I find to be most beneficial.
Mobile app, allows you to deposit money by taking a picture. Use a credit card payment processer (ie. Square) view biz and personal accts together. Basically all of the online features for business are great.
Also, like personal accts, if you're not in an area where you normally would be you can find a Chase anywhere.
Also it should be known, I have never used a credit union, so I am giving a one sided answer. But even if I didn't work at Chase I would keep my accounts there because I have had zero issues.
That's my 2cents