Applying for a business card- Seeking Advice

[emesmoses]

I am a novice in the world of business and need basic advice on obtaining the best business credit card for myself. I have read many posts and it seems like the choices are American Express and Chase Ink. My questions are:
1) Are those the 2 best choices? 2) Should I apply for both or only one of them? 3) Both AE and Chase have many different cards, which cards specifically do you recommend I apply for? And finally 4) DO I understand correctly that, even if I am already a card member of those companies, I should still apply as a new customer?
Thank you in advance for your answers/advice,
ME

[AsherO]

Both good options. Not sure which Amex you're referring to, but the Biz Rewards Gold and SPG are both decent cards (personally I prefer the SPG).

You apply for each card, even if you have other existing accounts with that issuer.

[Yehoshua]

I'm also new to Ink Cards.  Does 3BM work if I wanted to apply for the Ink Bold as well as personal cards?  I assume it does not.  Can someone please confirm?