I like the extra room you get with a geodesic
There's a better weight/space ratio in a tunnel, thobut, all else being equal. If you have the same amount of money to throw at a tent (i.e., same quality of materials and facility for technical weight savings) then at a given weight a geo will usually be smaller because of more poles plus associated stuff to hold them.
The people I've spoken to also say they cope much better in the wind as they have the same shape facing the wind no matter what direction you face it
The omni-directionality limits you to domes (which aren't especially noted for their wind performance, you can think of them as equally bad from all directions as much as equally good) or pyramids/tipis, most geodesics are oriented along an axis, just like a tunnel tent or a single hoop, and also like those they tend to do better with some relative wind directions than others.
but with tunnel tents you have to pitch facing the right way to the wind otherwise you can get buffetting.
For some values of "have to" and also some values of "wind". Often tents are pitched according to the vagaries of the ground, and/or the wind changes during the night, but despite this some of the world's go-to toughest tents are tunnels. And geos can be buffeted as well, but buffeting is not the same as "falling over". I would say an advantge of a geo is it's quieter in a blow because there's more supported fabric, but there again ear-plugs are pennies and you get more space in return.
At the minute, I'm using a Vango Tempest 200 which is very good, but can be cramped (probably more because if my lack of organisation!) I could see it getting pretty cosy as well if I actually had someone else in as well.
There's nothing intrinsic to "geodesic" that will solve that. You need a bigger tent, of whatever pole configuration. Perhaps consider an extended porch or twin porches if you want more effective living space, and some brands have rather different concepts of how much room someone takes up than others. It's the case with some that the 3 person tents are just about right for 2...
We have a geodesic, a tunnel and a small selection of single hoops. The only time we take the geo is when it's travelling by boat, where the extra weight and bulk for the same space doesn't matter.
Pete.