I would get the PE770. I have one and it is a really good machine for the price.
It's easy to use, you can download tons of designs and put them on a flash drive, then plug it into the machine.
I bought extra hoops, it comes with a 5x7 hoop. I and an extra 5x7 (most common on I use so this comes in handy having two), and a 12x5 one.
I bought mine from Joe at this store...
http://www.mrvacandmrssew.com/brothe...age-p-724.aspx
Customer service is wonderful, he answered all my questions before I decided to buy.