I have both the Deco 600 and 650. I love the designs on both but have to admit, I'm partial to the designs on the 600. They are some of the best stitch outs I have ever seen on an embroidery machine. I paid $300 and $350 for mine so $125 is an excellent price.
The embroidery area is limited but we use these machines in my classroom and don't need a big hoop. I've had several Brother embroidery machines so I have a few cards that I use but if you need more designs, get the PED Basic. It's about $100 and allows you to copy your designs onto a card from your computer.
I've actually had 4 of these machines. I have 2 in my classroom, one I sold to a co-worker, and one required a repair that cost more than I paid for the machine so I didn't have it fixed. I bought all 4 used over 5 years ago and the other 3 are still going strong. They are really good machines. I need to buy another one but just found out I'm being gifted one for my classroom so color me super happy! You can PM me if you have any questions.