I'm not familiar with the Ryobi machine at all, but i have a 16/32 Jet that has been a great machine.
These 16/32 models have heavier frames to support the drum, and a bigger motor too. I upgraded from a 10/20 machine and there was a huge difference....
You may want to inquire on age and get the serial number to make sure parts are available. All these machines will need some parts eventually. I've had to work on my Jet occasionally, but these are great tools.... If you end up getting it, i would highly recommend getting a drum lock set up to keep the drum from flexing too much. It comes in handy at times. Kirk