eveyone has their own (and fierce) opinions about tyres, and that's a good thing
IMHO japanese tyres are very good, but they don't tend to last. The Goodyears last an incredibly long time, and on top of that,they remain excellent in the wet beyond what seems possible - my last set were worn down almost to slicks, and they STILL gripped superbly in the wet
I only changed them as the MOT man insisted
and if you look at mytyres.com, they do test results on most tyres - look at the results for the GSD3s vs the Toyo TS-1 (the TR-1 is too new for test results I assume)
I know 'professional' tests are sometimes useless/biased, but as these are actually on the mytyres site, perhaps they should be given some weight.