in the last year I have been solely using a debit/credit card that comes out of my business account. I had been using a credit card but got sick of huge bills every month, basically I hate surprises when it comes to money. This way I got what I got money wise there is nothing else to pay. I also find by not using a CC I take a second thought on weather or not I actually need the item. if you have an I phone or moto droid, I use the reciept filer app, I take a pic of my reciept on the spot with my phone enter the data in, DONE, my books/expenses should also be done using this, its very cool if you ask me.