You may fit whatever parts you desire, no problems with that.
But as a part Meyle is no good for an MB, if it fails early you have to buy the same part again, meaning you paid twice.
Buying genuine from the first would give you more security of knowing you bought the right part from the beginning.
It's all about economics.
Same goes with Lemförder suspension arms.
Those made in Germany consists of better material quality as opposed to suspension arms made in Italy which rusts premature.
I wish you luck with your repairjob