Money Market Accounts Insured

Question: What is the best online Business Money Market Account or CD that can be linked to an existing bank account?
I would like something to keep our emergency fund in that is liquid. Though I wouldn’t be opposed to CD laddering or a similar situation. I also want to make sure it is a large and reputable company… FDIC insured for CDs and other accounts… and hopefully ranked on Bankrate.com. I just can’t find many that accept business accounts for all the others which only take personal banking business.
Answer: The best ones are the ones your bank offers, actually. All banks who have on-line services have these.
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