One advantage you have - this forum. You can troubleshoot and fix ANYTHING
on these cars with the advice and experience found here. And the internet parts houses are amazingly cheap on most parts.
If you kinda like to play with fine machinery, and have a little skill, then an older MB is a rewarding hobby and driving experience.
If you have to hire a mechanic to do everything, just buy a brand new one, and save money in the long run!

DG