Quite agree. Useful things and they stop a lot of mud splashes. I lost a caravan front window last year (very expensive) and fitted the genuine GM items afterwards to reduce stones and junk from pinging up from the rear wheels. Also, I ran over a lorry silencer laying in the motorway lane and the front n/s mudflap caught it, rather than the doorsill. The mudflap was a bit cheaper and easier to replace.
2015 2.2 CDTi SENav 163ps manual 4x4 in Carbon Flash with 19\" alloy spare towing a Bailey Unicorn III Madrid @ 1500kg.