Anytime you want to come down and walk in my park you're welcome to do so.
Between my back and the sharp edges, it simply wasn't fun. I used the Lisle tool and didn't have any real challenges with the wires/caps, at least once I remembered the dielectric grease (insert dope-slap here) but until then it was harder getting them back on than it was removing them.
The Benz was almost worse than doing them on my 1984 Z-28, on which I couldn't even see most of the plugs. The benefit on that car was that I could throw a piece of carpet over the engine and just lay on it, with the new plugs up on the cowl, just reach down, pull one out, toss it over my shoulder, put in the new one, find the darn wire, put it back, and move on. On the other hand they had to be done more frequently than the benz, so...
Still, pretty much anything is better than changing the battery on the original Cobra (remove passenger side cylinder head) or doing plugs on the old Chevy Monza with the V8 (unbolt motor mounts, raise engine for center two plugs on each bank).
How times have changed, eh?
Take care and enjoy the ride,
Greg