Zefal HPX is The Standard Frame Pump. During a flat stop on a group ride, the question always is, "Who has a Zefal?" They're fast, they pump up to a sufficiently high pressure, and they never seem to break. OTOH, if you need to get more than about 100 lbs., you need a Blackburn Air Stik. They will take you to over 150, but it takes a while, so in that case, better to start with someone else's Zefal and switch to your Air Stik. I've been told that Road Morphs are good pumps, but I've never seen one deployed at a flat stop. Maybe they're just more trouble and people don't get them out.