2 point contact. Mostly because I like the sound, and I can tap harder to get the sighted people to get the hell out of the way.

Partially sighted cane user here- i prefer constant contact because i like to always feel the changes in texture. I doubt that it's neccessary to help me get to where i'm going, but it's like a security blanket. Also, since its quieter, a weird part of my brain tells me that i can be more "sneaky" with constant contact

O&M instructor here. 95% of the time, I teach constant contact with a roller tip. I usually only teach switching to two point touch for two reasons... 1) travel through snow, grass or sandy areas or 2) an area where the cane sticks a LOT, like cobblestone and such.

In some rare cases, I have clients who prefer two point touch because they also use the sound of the cane for some echolocation.

2 point touch (and variants), mostly. I primarily use an NFB cane which is really best used that way. Sometimes I will slide the cane if the terrain calls for it or if I am trying to feel a specific thing, that sort of thing. I can walk at a natural speed for me and the light cane movements don't tire me.

I have an ambutech but notice that when I use it (or use constant contact) my arm gets fatigued, I tend to sweep a narrower arc due to the weight, and I walk slower and have less confidence. I use it for some situations, though.

I use constant contact. Basically that's what I was taught when I did cane training back a few years. I like it more regardless because it gives me topography. Even though I use a pretty heavy cane, and that can get tiring, I don't mind. I'm not a great cane user at the best of times though :D I usually avoid most obstacles though, I've only one sweet scar from anything I've missed.

constant contact whenever I can, but it doesn't work on snow, dirt, grass, mud, etc.

Partially sighted - I don't use my cane all the time. I prefer constant contact, because I feel like it gives me better feedback and I feel more in control. It doesn't work in some situations, but it's my go-to method when I can use it.

I have a bum ankle, so sometimes even very slight changes in elevation (like a large crack in the sidewalk) can be problematic if I'm not aware of them. They either catch me off guard and I actually turn my ankle a bit, or (more often) I take a step, start to feel the change, and instinctively freak out and over-compensate for fear that it's a bigger drop than it is. This has resulted in injury in its own right a time or two.

Stuff like that's easier to pick up on with constant contact.