I have one of these Aoyue SMD tweezers. Don't waste your money on it. My experiences with it:
- Takes forever to heat up compared to an iron.
- The hinges have a lot of play and the tips don't meet up consistently.
- The tips have a long taper and don't transfer heat very well. Unsoldering parts connected to significant copper paths can be difficult to impossible.
- The two heaters are slightly different in heat output, resulting in different temperatures for the two tips.
I've reverted to the method of using two irons, one on either side of the component, or a wide tip to get both sides at the same time, or hot air depending on the situation. The tweezers looked like a good solution, but bad implementation.