I recommend the Lezyne CNC Floor Drive or the Classic Steel Floor Drive. I have both, and they are a joy to use. I do not expect to buy or need another floor pump in this lifetime. The thread on chucks are slower to use than the flip chucks on other pumps, but then, you won't wear down the chuck as quickly as you will with a flip-on. Why? because the grommet inside the chuck head on flip-ons deteriorate/wear a little each time you put on and remove the chuck. The Lezyne thread on chucks are much slower to wear, if they do at all. As with most things in life, it is a trade off between convenience and longevity. Kinda like fast food. A hamburger at a fast food joint is a very convenient meal, but then you are hungry not much later. A sit down meal at a restaurant takes a while from ordering to serve, but the meal lasts a while. Funny analogy, but I hope I got my point accross.

The one final advise I'll give is that do not buy any of the Lezyne floor pumps with any plastic material as part of the chuck, as I have heard of people cracking the plastic.

I love my Lezyne floor pumps.

Hope that was not too long a response/post.