Another two favorably reviewed Lezyne pumps to consider are the the
Micro Floor Drive HP and the
Micro Floor Drive HPG (HP=High Pressue, G=gauge). They have an even longer hose than the Topeak Minimorph but are made of metal (less liable to break) and are lighter. The do cost a bit more.
The important design features of both the Mini Morphs and the Micro Floor Drive pumps are the hose (prevents breaking or shearing off the valve) and a fold-out foot that rests on the ground under your foot. This allows you to really pump down hard and efficiently, unlike a hand-held pump with no hose where you have to push against yourself from both ends. Some cyclists say this type of fold-out foot pump is so good they don't use their full size floor to top up their tire pressure.