Have a torque wrench but seeing as its one of he few things i havent repplaced recently and i am doing alot of dlicate engine work...time to buy a new one. The one i got was a bout £10 many years ago....
So questions questions
What brand - i almost always go sealey.....how are draper ?
1/2 or 3.8 or 3/4 drive?
whats the extremes i would need for working on a v6 torque wise?
Finally calibrated is it important ? I am looking at removeing and refitting heads etc so i dont want to botch thejob up due to poor wrench.
Any recommendations?? 
Well i share with my mate a torque wrench this is some cheap clarke, we tested it at work in our gauge lab and it was doing 2nm more than you would set it, another friend of mine bought a super torque wrench, snap on electronic from ebay brand new for 250£ it would do +1 nm. My opinion is that if you ware not a pro then you don't need an expensive wrench.