Oil change is coming up for my 2006 E350. I've wasted lots of time researching oil and filters.
An interesting point is that AMG is apparently more picky about oil that MBZ is. AMG, at least in what I could find, only will recommend Mobil 1 Super Syn European Car Formula 0-40 while Mercedes will tolerate other main brands of similar synthetic oil that meet spec 229.5
As to filters, I read one blog that AMG recommends only Mahle Knecht filters but I could not confirm that. Mercedes OEM filters are supposedly Mann brand.

I certainly have no problem paying a few bucks additional to use the Mobil 1 oil but if anyone has any advice as to which is the best filter, it would be much appreciated.

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'76 240D-Sold
'78 240D-Sold
'85 300 SD, 165K-Sold
'88 300 TE, 165K-Sold
'64 Porsche 356C Cabriolet- under restoration
'86 560SL 124K Miles-Sold
'94 320E Wagon, 74K Miles-128K Miles JUNKED
'06 E350 Wagon, 84K Miles
07 SL550, 14K Miles

I've used Mann fleece filters HU7185X for a lot of miles and when I remove, its never shown any signs of weakness. Cant say the same for some other filters I've seen.
Mobil1 Euro 0-40w ahd the HU7185X is an inexpensive winning combo.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

I buy the MANN fleece filters from ebay or sometimes advance auto - its a MANN filter in a purolator box.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)