I've had a Topeak Joe Blow Sport for 11 years now, and love it. The thing with the Topeaks is to get the TwinHead chuck, rather than the self-adapting head. The double-ended head is foolproof, seals well and is easily serviced. The only maintenance I've had to do to the thing is replace the hose, which dry rotted over time (many climate changes over the past 11 years). I can get really high pressures out of this pump (done 145psi, just to see if it was possible).

I also have a Specialized AirTool Comp, which is equally reliable. Had that for 4 years now.

I've had problems with the Silca press-on head - namely, I've broken many presta valve screws when removing the chuck from the valve after inflation. So I can't, in good conscience, recommend their head.