Welcome to the forum.
You dont need a flame suit on the forum!! Many of us have a far worse bark than bite!!
I agree with several others that a 300 is probably a good compromise between power & economy. It has a high enough top speed to get you arrested.
Unless you need a getaway car, you probably dont need the 500 or 560.
My brother has a late 90's C280, there is not a lot of room under the hood. It has plenty of go!!
Unless you are planning on having tall adults in the back seat, you may not need a "L".

Make sure you look at a good number of cars before you choose one.
If you find one you like, check on this forum, some one may know some history.

Happy Hunting !!!

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving