Mouse - Wireless and Symmetrical

[unwashed potato!]

I currently have a wired Logitech G300 which although I love, the back button unfortunately often does the action twice with clearly only 1 click so seems it's getting faulty.

i have decided now is a good time to go wireless as i really don't need the benefit that a wired mouse brings.

i've looked online but struggling to find a simple, decent sized wireless mouse that is also symmetrical. i'm a lefty and although i usually only use the mouse as though i'm a righty, i have found the right handed only mouse to be too awkward for my hand to get used to so would prefer a universal one.

the sizes also i'm concerned with. many on closer inspection appear more laptop style small size. the g300, or even slightly bigger is my ideal size.

it doesn't need any fancy buttons either. in the end i only ever really use the back button.

any recommendations?

 

[Brok]

Logitech G305. I'm left handed and also want a mouse that can be used in either hand depending what I'm doing and this is the mouse I keep in my laptop bag. It's not a mini-size laptop mouse but is on the small side of standard mice if that makes sense.