The ones I tried were at Walters Photo Video In Merthyr Tydfil - they were excellent in both condition and IQ. It was about 2 to 3 years ago that I tried the second one. To a small extent I agree with many who bemoan the reduced contrast and muted colours - but both of these issues are not very pronounced and easily fixed in PP. The sharpness and light weight impressed me!
I find this lens strange as many complain about it yet everyone I have met who actually owns one reckon it's the best thing going and would not entertain any change - hope you are pleased with yours!