Also consider the Ti Goat Adjustable Poles.
I got a pair last month and find them excellent.
Out of the box they handled 35 mountain miles over 2 days with no problems. This trip had snow, mud, scree, and talus.
I'm 5'9" at 175#, plus 23# FSO.
Previously reported slipping issues did not occur with me.
They have a very positive stop when tightening.
The symetrical grips were comfortable and always correctly oriented.
I added "keeper cords" so the poles would follow me when a light grip lets one get away.
I found the adjustability nice for the perfect fit, useful in tent set-up, and for those very few occasions when I chose to pack them rather tha carry them. By the end of the trip I always carried them, balanced lightly in each hand, ready to go.