Truflo Evolution plus here, fantastic, and not too expensive- the same pump crops up under other brands too. It's either a big mini pump or a tiny track pump, but either way it's small enough to just throw in a bag but big enough to pump up tyres quickly and easily. Which is exactly what a pump should do. No real reason to go smaller IMO, lots of people fixate on size but I don't think it makes any real difference. It also has a fairly inaccurate pressure gauge, which is better than nothing i guess- there's a version available without it. Just like a Mountain Morph, only tougher, cheaper and better in use.
I think the Lezynes's are beautifully made but not actually as well designed for pumping, which is kind of a downside.
