I've been using the Topeak Road Morph G for many years, I actually have 3 of them. I've never had an issue with the pump, but based on the size and weight I thought I would try something different for my road bike. So I went with the Lezyne Sport Drive HP. Much smaller and lighter.
Then I got to thinking. Smaller and lighter is generally a good thing, but I wonder how the Lezyne would do with my 40mm gravel tires. Note: I am still rocking tubes.

The Road Morph G weighs 7.7 ounces (with a couple of wraps of duct tape around the barrel).
The Lezyne Sport Drive HP weighs 2.7 ounces.

So I did a little test and it took the Lezyne 2 minutes 15 seconds to get my gravel tire up to 40 PSI.
The Road Morph took 2 minutes flat.
The Lezyne got a little warm, but never changed in pumping effort.
The Road Morph didn't change temperature but got harder to pump from 30 to 40 PSI.

So, for being a third of a pound lighter and much smaller, I'm going to order a Lezyne for my gravel bike. I realize that both of these pumps are designed around higher pressure, lower volume road tires, but I still feel it was apples to apples. I'll be ordering the same high pressure pump rather than the high volume pump for my gravel bike because sometimes I ride this bike with skinny tires on the road, and the HP pump works fine for low pressure tires but the HV pump does not do as well with high pressure tires.

Two things to note, the Road Morph uses a chuck, where as the Lezyne screws onto the stem. So you have to be careful not to unscrew the stem when you unscrew the hose (I did that twice before I dug up a valve wrench).

Also, the Road Morph has a gauge in the hose. However, even wearing readers in a well lit room, I have never been able to read the numbers on the gauge, so this isn't a factor for me. I think Lezyne makes pumps with the gauge on the hose, but again, I don't care. It appears that the HV and HP pumps weigh the same, but I think the HV pump is a little fatter.

Oh, and the Lezyne comes with a side mount that fits under a water bottle cage. Don't know if the new Road Morphs come with a bracket, but they didn't when I bought them. They are not interchangeable, the Lezyne pump does not fit in the after market Road Morph brackets (too skinny).