I have two Topeak Road Morph with gauges. While they are decent pumps and I continue to carry one, I will not buy Topeak again.

Once you enter the re-build phase of ownership your pretty much outta luck. Communication with the single US parts supplier was extremely difficult. I took it to a well stocked auto parts store to find o-rings the same size. I also have lezyne...these are quality units, that is what I would buy now.

I am in love with my lezyne floor pump and would trade two road morph Gs for one of these:
http://www.lezyne.com/hand-pumps#panel-7