I run the Road 5 myself, currently on my 2nd Road 5 rear, the first one lasted 7000mi.
It completely transformed the handling of the bike vs the PR4s I ran previously. The PR4 was relunctant to lean over and a little wiggly when leaned over, but had great grip in the wet. It lasted about 6000mi and squared off long before the sides wore out, the front cupped badly towards the end.
The Road 5 rear never squared off and I hit the wear bars on the side and center at the same time, towards the end the rear did start to cup a little, but the tire only got squirrley at the very end.
The Road 5s to me at least have significantly better feel and feedback, and have a bit steeper profile so the bike now loves to lean over and responds like a super moto. The feel completely solid even on the edge of the tire, grip in the wet is even better than the PR4. I've never tried the Angel GT, but from what I've heard they are generally better on more powerful bikes. I talked to a guy this weekend who had a set of Road 5s on his K1200S and he said the bike completely chewed them up, so the Road 5 might not be the best choice on a heavy, high power bike like a Connie, FJR or in this case the K1200. The Angel GT is the stock tire on the KTM Super Duke GT, and it felt amazing on that bike when I test rode one, and the Angel GT looks like the tread would be less prone to being chewed up by a big power bike.