Ive had a GRCS for about 15 years and am actually on my second one, prior to that I had a German reproduction of a Hobbs style device that I bought off sparsholt college for about £900. Id credit getting the GRCS as the starting point of heading in a mechanised direction, simply because we removed trees in larger pieces so needed an ability to move large sections of timber more efficiently so in 2011 bought a boxer skid steer and the rest is history.
when I first bought it we were doing lots of back garden/confined space removals, It allowed us to remove trees in a style not dissimilar to using a crane by lifting and then lowering. I wish I could be bothered to trawl through nearly 18 years worth of pictures on arbtalk to find more GRCS ones but have to much else to do. Over the years its been essential to my way of working and its really only since I've owned a roto that we don't use it so much anymore.