The HP-X is the grandaddy of frame pumps, and its styling could be considered retro if it hadn't always looked that way.
The pumping experience is pretty nostalgic: it sounds and smells the way pumps used to back in the day. It's pretty efficient too, racking up 100psi in 140 strokes, and pushing on to nearly 120psi. The patented HP-X handle locks for pumping and springs for frame fitting, and does so with the assurance of decades of experience. I like the HP-X very much. If you're off to the back of beyond this is still the pick.