I use Sealey torque wrenches and they work well enough for me. Remember that if you're buying one to use with bottom brackets it'll need to measure torque in both directions (usually having a push-through head), many don't.
I very definately fall into the inexperienced 'how do you develop feel in the first place' camp which is why I use torque wrenches. Torque wrenches are a lot longer than the usual allen key sets and so give a very different feel, but once you've set a bolt to the correct torque there's nothing to stop you then tweaking it back and forth a little with an allen key.
There are dangers though (as I've found to my cost) the most obvious being blindly tightening something waiting for the torque wrench to click, until the bolt snaps! You still need to be aware of tightness just in case.
I recall quite a few folk on here posting about how they didn't realise how tight they had fastened everything until they got a torque wrench.
I think that it's rather telling that a number of carbon component manufacturers now produce pre-set torque keys for use with their products. I suspect that quite a few people are over confident about their ability to 'feel' torque but probably not so hamfisted as to crack aluminium components. Carbon components seem to have somewhat lower margins for error and I suspect a number of people have consequently been somewhat suprised when they crack them. I'd imagine that a lot of users have tried to warranty carbon components that have been over tightened, hence the introduction of torque keys.