Look for a machine that can take a USB stick as opposed to requiring a special memory card. That way you can download items from any of the embroidery sites to the USB and bring them right to the machine.
Also ... be sure to check with your dealer if they have any used embroidery machines in your price range. Folks trade-up all the time, the dealer services the machines and re-sells them - most of the time with a short warranty (30, 60 or 90 days usually). And because your getting it from the dealer, you'll get support and possibly even lessons.