I believe the difference is the 215 is an oiled motor while the 210 isn't.
The colonel is correct, oiled vs. a dry pump. Other than that the VP215 and VP210 are close to the same. The 215 has a slightly shorter cycle time. The oiled motor will run longer without over-heating if you have a giant pile of meat to package.
One thing to keep in mind. You'll need dedicated space. The VP215 is heavy and it's not something that I want to move in and out of a cabinet. It can be done, I just don't like doing it. You also need overhead space as the lid literally pops open when the unit completes the cycle. If you run it under an overhead cabinet, you'll have problems. I have mine on a rolling cabinet.
For what I do, it was worth the investment.
VP215
Features a 1/4 hp oil pump
10 1/4" sealing bar
Cycle time is a rapid 20-40 seconds
Stainless steel exterior
Smoky-clear lid makes it easy to see and monitor the vacuum process
User-friendly control panel; filler plates included
Perfect for packaging liquids and liquid rich foods
462W of power that can apply up to 29 3/4’’ Hg of suction
VP210
Features a maintenance-free dry pump
10 1/4" sealing bar
Cycle time is a rapid 25-60 seconds
Smoky-clear lid allows for monitoring of the vacuum process
User-friendly control panel
Keeps game meat and fish fresher for longer periods of time
Light capacity makes this unit suitable for a small deli or kitchen
Filler plates included; 110V