Bests & Worsts Reviews from Amazon

If you're undecided between this Topeak and the Serfas TCPG, read on. I purchased this pump about a year ago and have loved the ease of operation. I mostly use the Presta end for my TT bike, but I have on occasion used the Schraeder side for car tires and an old mountain bike. Both valve adapters work flawlessly; more on this later. What makes this pump better than the Serfas TCPG? Two things: a lot more air goes into the tire per pump action, and the Topeak is much easier to pump, particularly when you approach 100psi. I have been able to make direct comparisons between these two pumps on multiple occasions and the difference is actually quite dramatic. It takes me half the time to pump up my 700x23 on the Topeak than on the Serfas, and on the Serfas, I'm pushing as hard as I can on those last few pumps to get the tire to pressure. I'm fairly light, around 150lb, and at times my feet are off the ground and I'm using my body weight to get that last bit of air into the tire. On the Topeak, the last few strokes are a bit tough but I'm still well within my means. As for some people having difficulty with air leakage on the presta side, or having difficulties removing the pump adapter from the valve, the solution is surprisingly simple: don't unscrew the valve tip all the way. Loosen it just enough so that when you push down on the tip with your hand, you hear decent deflation airflow. The closer the tip is to the base of the valve, the easier it will be to remove the pump adapter after you're done. This is because if the tip is unscrewed all the way, it tends to get stuck above the rubber gasket inside the pump adapter. The amount you can unscrew the tip varies per valve, so unscrewing the tip all the way might not affect things in all scenarios. But to be safe, just unscrew as little as necessary. It doesn't take much for the pump to operate at full potential. The other benefit of this is that you're likely to get a good seal between the valve wall and the rubber gasket, so there won't be any air leakage during pumping or removal of the pump adapter. This technique applies to all presta pumps, not just the Topeak or Serfas.