What they say: Trigger lets you quickly and precisely fix a flat. The integrated regulator means refilling the tube is no longer a guessing game, allowing a controlled and intuitive fill.
What we say: By locking onto the valve in a similar way to your regular track pump, the Trigger is endowed with a greater level of security and means there should be no chance of leakage. Air is released by sliding the body and cartridge down the head which takes a little getting used to but works well enough thanks to the clamp.
Conclusion: A simple and well-executed solution and at a sensible price, too.