Bringing cash to the US on hols

I'm heading to the US shortly on holidays... I was wondering what would be the best way to bring a large amount of money with me (8-9grand).
I dont really want to load up my credit card and I've been told traveller cheques are relatively expensive.
Can anyone direct me to a link where i can get more info or offer some advice...

There is no limit on how much money you can bring with you into the US. However, if you wish to bring more than $10,000 you must complete a US Customs Form 4790.

You can access the money though any ATM machine in the US if your card is Cirrus enabled.

Cirrus and use ATM's or credit card is best. Only problem I have found over the years is that US is that card readers are very sensitive. Husband and I have got 2 cirrus and 2 cc's between us. On every visit at least one of these doesn't work. Make sure your cards are newish (no scratches or bends).