Are these reliable tyres?
IME, yup

They don't compare with Gatorskins for puncture protection, but then again they are a race tyre whereas Gators are training/winter tyres.
FWIW I ruined a brand new Schwalbe Durano on a brand new bike on one ride from a flint cut, but it didn't make it bad tyre
IME, 4000s are great tyres that wear well and grip well, I've not had any puncture issues, (even with my fat @rse

), and even though they've had loads of miles put under them they still have loads more miles in them.
In fact I might put them back on now the sun has come out
