No need to chop open as most of the filter paper is exposed, that said not sure what's in the can side probably more of the same. Occasionally see Mahle but not the last two Wix or Baldwin, MB are not pricey around twice the cost of MANN.
This is another popular web site which lists the MANN filter almost double the current cost (inc shipping), it also also has a Purfulx filter which looks very much like the Fram.
https://www.mister-auto.co.uk/oil-filter/mercedes-benz/e-class/e-class-estate-s124-e-300-t-d-136hp-1993-1996/
Going to stick with MANN, bank holiday w/end which normally means an extra 10% discount
