KMC Z8.3 3/32 Inch 8 Speed Chain 114 Links

I recommend this product

I have used a few KMC chains and found them to be long lasting, though unless you record exactly when you fit them and the miles you do, this is a bit subjective.
The outer links are silver coloured, (look shinier than in the photo). It comes with a re-usable 'Missing Link' which you can fit and remove without a special tool. There is a 'manual' telling you how to do this. I have never had a link break or come apart accidentally. The chain and link are supplied in a plastic box which is good if you want a spare on tour.