I don't think you can defame yourself either...
They are what they are. Even if they are the least grippy semi slick, they probably last the longest and they probably out grip plenty of more expensive street tyres. Tyre choice on one level is quite like turbo choice, you slide up and down a scale of:
Grip------------Longevity
Where you sit on that scale is personal choice. With turbos your scale is:
Laggy but powerful-----------Less power but less lag.