CREDIT CARD QUESTION, BEST PLACE TO GET A CARD?

Here's my story. I've got an Investment Debit Account open with Etrade with quite a bit of money in it, 20000+. I work in a family business and therefore i get paid with checks, and we only take the tax money through the business, our accountant told us to do it this way cause its legal and better for us this way. ANYWAY I'M LOOKING TO GET A CREDIT CARD, WHAT DO YOU THINK IS THE BEST PLACE TO GET ONE? AND WHY?