The SE400 isn't bad but the hoop size is a bit limiting. Beware that Brother intentionally slows down its cheaper machines but they are still quite usable. They also intentionally limit the clearance under the arm of their cheaper machines which can be frustrating with conventional sewing.
I would recommend picking up an "obsolete" home embroidery machine. Models that were top of the line 10+ years ago can be had for a steal and most have seen little use. That will require sacrificing USB connectivity but you can get a more capable machine in the end.
I would recommend picking up an "obsolete" home embroidery machine. Models that were top of the line 10+ years ago can be had for a steal and most have seen little use. That will require sacrificing USB connectivity but you can get a more capable machine in the end.