Bob , I used the Tec 1 and even as good as there were the front always felt odd and decided to get them off the bike. The TA3 , I'm now on my 3nd set, are great in all conditions . I don't commute but normally ride in most weathers in the Wales area which has a great selection of roads from the usual rural A roads to twisty B roads and the back tracks as well which are normally covered in placed with gravel , grit , animal shit , moss etc
The TA3 in the wet and slippy conditions are brilliant , they still seem to get decent heat in them and have never moved. In the dry they can be pushed hard and the front never moves or feel squirrelly mileage I would say for me is no more than 2.5 to 3 k on a good day.
To add the PR5 is a good wet weather tyre , but I found they wear fast and the smooth band of rubber on the edges can when banked over ( as you can on the TA3) would slip at times , upright though are good and also impressive under wet braking.
Overall I would choose the TA3 as I have never had any issues with the sets I have used , run in and summer 1st set , Spain 2nd set , now running autum / winter on the 3rd set
1250 gs
Stick