Not familiar with Brother machines but they are made by the same company that makes Babylocks and I've heard good things about Brother machines.
I was trying to help a friend of mine who wanted to buy a machine for her daughter (very young - 8) so I suggested she contact a dealer and see if they had any refurbished machines she could pick up for around $100.
She decided not to listen to me and bought her something at WalMart for around $65-$70 and it was a piece of junk. Her daughter started having bobbin problems, threading problems, things like that so now she doesn't even want to sew because the machine is junk.
I think you will be fine with a basic Brother but thought I'd throw this incident out there to consider.
Good Luck !!