Which torque wrench?

Nobody has mentioned a Norbar TT20. Its range is 1-20Nm, which is all you'll ever need for over 90% of bike applications (I can only think of the nut on the back of a rotor 3D which holds the spider to the crank, this is 40Nm). I have one and find it excellent.

I'll second that. Norbar make excellent products, bound to last a lifetime.