I've seen those on a 210, they really didn't look quite right.
There are some really nice 211 designs, you will need custom lug bolts but those aren't a big deal anymore.
There are also lots of the AMG monoblock and thin-spoke styles that look very, very good on the 210. Check out JOE55's car for example and he's running 18s with a drop, still has a very nice ride.
For other ideas look at Tire Rack's wheel configurator; even if you don't source wheels from them you'll get some good ideas about what looks good to you and what doesn't. Plus you'll have some brand names you can trust wherever you buy them (a great thing about TR is they don't sell junk; if you do buy a set through them they'll come mounted and balanced, they also sell bolts if you need them and they are competitively priced).
Take care and enjoy the ride,
Greg
__________________ If the only prayer you say in your life is thank you, that would suffice. Meister Eckhart
When you learn from your own mistakes, that's experience.
When you learn from the mistakes of others, that's wisdom.
When you fail to learn from any mistakes, that's government.