This is the JT kit that I have ordered for £85, it comes with JT chain says 'o' ring but the X1r chain is heavy duty 'x' ring, specs are very good and they seem to be taking on DID, so I thought I would give it a go
http://www.ebay.co.uk/itm/281355544601#ht_0wt_0 the kit Adeejay listed is JT sprockets with Triple SSS Chain, how that compares, don't know
Oh and I got the 12mm sprocket nut with tab washer from Wemoto
Just waiting for mine to arrive, be nice to get rid of the vibration and noise, my current one is knaked !!!