I use Gillette Slalom carts regularly in my old Contour - great blades, and no annoying lube strip. Used to be able to get 30 for £7 on eBay. I searched for them recently and couldn't find them anywhere online.
I assume they must now be discontinued. Can anyone confirm this?
... he says, having just checked the usual places. No! They've gone! Proper gone!
Alternatives (without that god-awful lube strip thing): if you look to Trac II cartridges, which slide on from the side rather than grip, some of them are dual purpose, for Trac II and Contour. Check the backs carefully and you'll figure it out. They might not be as good as the Gillette, but they'll do the job.