What sort of expectation do you have?
A small pump will not perform well. A good performer will not be small. No on-bike pump will work as well as a full size home pump.
Having said that, to me the best blend of features and convenience is the Topeak Road Morph G Bike Pump. You can stand-pump like a home pump, it has a built-in gauge (a huge plus for me), and it is big enough yet light enough.
Again, it will not be as easy to use as a home pump, but it will be easier to carry. You need to figure out where your ease-of-use/small-n-light threshold is.