Had these on my commuter for the past 4 months - been really impressed. I ride the 25s which remove a lot of the road chatter compared with the 23s. No pun**ures yet (and I've had plenty on the roads round here!). Great grip.
Doubt you'll find these as cheap anywhere else. I'm going to buy another set for when my current one's eventually die.
2% Quidco; 3+% TCB