Largest Embroidery Field

Hey Everyone,

I am fairly new to this embroidering thing. I have a Brother SE400 and am looking to upgrade. However, I don't have a ton of money and all the Brother machines that have a 6x10 embroidery field are thousands of dollars and not available through online. Do you find that you use a 5x7 more than a larger field. I do kids shirts mostly, is 5x7 big enough. There is a singer machine that does a 6x10 but does not have 5x7 hoop and I am not sure I want to switch brands. Any thoughts would be extremely helpful. Thank you.

Andrea