[Porsche-O-Phile]

Using the super heavy duty slime ones on my mountain bike right now - they're heavy as heck but seem to work. I've had reasonably good luck with the road bike. I just accept that flats will happen as part of the activity. I can change a tube even in the rear wheel now in under two minutes (and I'm betting I can shave another 30 seconds off of that) with minimal grease/junk on my hands afterwards.