Question Looking for suggestions on a vertical gaming mouse?

Not a gamer per se (full disclosure).

Overall, for the most part, any computer user's preferred mouse is a subjective choice.

What that means is that the choice is purely subjective.

What I ( 7 1/2" measurement) like is a basic Logitech M310 mouse.

All you can do is to try out as many mice as possible in order to find the mouse that seems to work and be comfortable for you.

Go to as many places as you can to go "hands on" with mice that may meet your requirements.

Try, test.

Just my thoughts on the matter.
 
What I ( 7 1/2" measurement) like is a basic Logitech M310 mouse.
As the title states, I'm looking specifically for a vertical mouse. I'm trying to alleviate forearm strain that builds up when gaming for long hrs. It's caused by using your hand in a horizontal position for prolonged periods, which twists the 2 bones in your forearm, causing pressure on the tendons. It can actually lead to Carpal Tunnel syndrome.
 
Fair enough.

I am not a doctor (full disclosure) so will not speculate on possible ways to alleviate the strain etc..

However, I will suggest that you see a doctor and have your arm and hand examined before doing anything.

What might seem to be a "solution" could actually cause more harm in the longer term.

I had some problems a few years ago and what I thought was the problem was not. A bit of prescribed physical therapy fixed the matter.

It may prove out that a "vertical" mouse is not even needed.

That, however, is up to the doctor.