First of all you get what you pay for- avoid the £1 ones like the plague (any style) . They are rubbish,period.
I use scissors, duffus and fenn (yorkshire) and have no trouble with any, choosing the type for the particular run. The talpex traps are getting some great reviews but i dont use them. Duffus are brilliant if used correctly, so dont believe whoever told you otherwise.
There is money to be made in moletrapping, but its HARD work. I trap every day just about through the winter and come home absolutely knackered, muscles aching and have nearly been reduced to tears or jacking it in