Originally Posted by
PDX-RDM-AVL-TPA
I wanted to get a Delta Skymiles Amex but they rejected my app since my business was not in place for 1 year.
IMHO, it is unlikely that Amex actually rejected you app because of the age of your business. As you are going to be personally liable, the only factor should be your personal credit record.
As to which Amex Biz card is best, apart from the bonuses you can get, the answer is probably: none. I'v had several OPEN cards and never found the benefits very useful--in fact, useless.
Biz cards are very dangerous.

No legal protection under Fair Credit Billing Act.
Why not, as suggested above, just use a personal card. I might try for an AA Citi card with 20K signup bonus, if I were looking.