Just Demo them if you can.
666 132x41 carries more width, total freestyle. Save to say now, pretty much in it's own class.
Shinn 130x40, a luxury super smooth 'n' fast allrounder.
You progressive? 666
Like to ride something special? Shinn
Sorry, very vague, but what one guy likes in one, another would like in the other, just try to Demo.
If you choose the wrong one, it won't be the worst mistake you've made in kiting.