I have owned/own two click style 1/2" torque wrenches. Both Canadian Tire pro series. The first lasted me about 15 yrs before the plastic handle broke and made it useless except as a breaker bar [ the ratchet portion also screwed up after ~ 6 months of use as a breaker bar - to be expected ]. I also couldn't get replacement parts to fix it. The second is also C.T. and is  a year old, seems fine, but is about 10" longer than the first. I'm a hobby mechanic and don't use these every day, that's why I chose to go with C.T. I'd prefer to use a Sears brand if it was cheap enough as their warranty is also lifetime but the Sears warranty is better in that you don't have to produce a receipt. I really dislike C.T.'s return policy as I can never find the receipt but at the time the C.T. wrench was at 1/2 price [ ~C$65.00]. Apparently you should get the wrench checked occasionally but I never have as I don't know where to take them. The beam style wrench would never have to be checked but it's a little harder to get a consistent torque with compared to the click style as I can't seem to move my head at the same angle and speed that the wrench is traveling, but tape does help. I do have a cheap 3/8" click style... I don't think I've ever used it. Eventually I'll get a dial indicator inch-pound wrench for when I start doing rear gears. I'll be looking for used when I do.
Hope I helped,
Richard