Not to rain on everybody's party here, but I've had a Super Pista for 3 years, have had to change the rubber washer at the head a year ago, and it looks like I have to replace that again and the leather plunger in the barrel.
It's not a big deal, and the pump works great otherwise, but I've found it to be not as maintenance-free as some people rave it is.
I'm looking to get an SKS Kompressor track pump, it got a first-rate review in Cycling Plus a while ago. Looks like it's only available through UK websites.
Just my 2 cents.