I've got a torque wrench for the smaller jobes like seat clamp and stem but I'm now thinking of getting something for beefier jobs like BB. I've been doing some research and see I'll need a bi-directional wrench for left and right hand thread of BB. I've seen this Toolzone model 20 - 110 Nm. The same wrench is through various sites from £17 to £40. Almost every review is positive. (I know they are on the site selling them}. Does anyone have any experience, good or bad, of these wrenches or have any other they can recommend at a reasonable price. It will probably only be used once or twice a year and stored in the house (not our damp garage}.