I find TP and WKO much easier to use and clearer than GC but that might simply be because I've had more experience with it. I only use GC on travel machines and for the odd aero test.
Based on the 14 day trial of WKO4, I found the programme much more intuitive than GC. I find myself having to constantly Google help docs with GC to find fairly simple things, whereas with WKO things were where I'd expect them to be. But, £££'s vs free.
I find TP and WKO much easier to use and clearer than GC but that might simply be because I've had more experience with it. I only use GC on travel machines and for the odd aero test.