Park Tools make durable, reliable track pumps in the form of the PFP-3, PFP-6 and PFP-8 models. I have a couple of these in the garage (one stays put, the other is a spare for events) and they're decent kit. However, one part that slowly wears out is the pump head - the bit with the lever and rubber seal, that fits around the inner tube valve. I've bought the official Park Tools "Pump Rebuild Kit" (item #1081) in the past, but my local bike store helped me out this time with the BBB Autohead BFP-92 pump head.
It has the same tough plastic construction as the Park Tools pump head, and is actually smaller as it combines the presta and schrader valve options into a single outlet.
Join the Team Zwatt campaign for a discounted power meter - available single-sided or dual-sided!
I've supported the Team ZWATT campaign on #Indiegogo and will get my affordable power meter soon.