I used the city jets and they are a good tyre , i have changed now to another tyre for my winter hack as i only use it when the roads are dodgy... http://www.chainreactioncycles.com/Models.aspx?ModelID=18822
On the road bike i use conti gtor skins , you can get MTB version but i can only find a 26x 1.2 version so you would have to check if your rims could take that width of tyre.
I run Marathon plus slicks on a Hybrid and have run the 26" on my old mountain bike in the past with no punctures and once inflated to the correct pressure they are far better than knobbly tyres on any bike being used on the roads/tracks or paths. Use minimum pressure or close to it on looser or rougher terrain and higher or maximum on flat tarmac. Makes a massive difference to traction and therefore speed and enjoyment of ride.