I'm looking for a set of self sealing inner tubes to go on a mountain bike I intend to start using again for commuting.
Some years ago I used to commute by bike on a set of kevlar lined tyres, backed by self sealing tubes (when commuting to and from work I believe in getting there on time) and never had a problem.
I'd still carry a spare tube for disasters, but don't want the hassle of changing it on the way to work if it can be avoided.
I don't like the add on "slime" as I watched a guy stuff a tube up whilst adding it, but you used to be able to buy self sealing inner tubes.
K-Mart sells thorn-proof tubes for ~$12 each, this is what trials riders use to prevent flats.
Hutchisan makes tubes calles 'Green" tubes, they are $25 each and are aimed at downhillers.
Stans No-tubes are all the rage in the XC Circut, for around $100 you can turn your wheels in tubeless, with the added bonus of latex inside that fixes flats as you ride. This is what I have used all year in the MTB nationals round with no flats.
Best option might be to start with the k-mart tubes and go up from there.
K-Mart sells thorn-proof tubes for ~$12 each, this is what trials riders use to prevent flats.
The LBS should have them too. They work (IME), but the catch is the extra weight. Much more than self-seal or liners. And presumably extra rolling resistance too?