Interior Wall Panels - Options

I am at the point where I can finish the inside walls, and I'm looking for opinions. These will be cosmetic only, not structural: my outside walls are 1/2-inch plywood, with 3/4-inch framing (1x4s) glued and screwed to it (I did it this way because my tests showed this to be stronger than 3/4-inch ply, and the configuration allowed me to put rigid insulation between the framing).
I need to cover the inside walls with something, and though I have ideas, I wanna see if anyone else has done something similar. I like the ideas of finished wall panels, though I'm not thrilled with the options I'm seeing: white beadboard, cheesy fake brick, etc. The other option would be to use thin plywood, like lauan, and then paint it -- I wanted a prefinished panel so I wouldn't have to bother with painting, but if the prefinished panels don't thrill me, I may go the lauan route.
What did you all use? And the big question: do you like it? Am I overthinking this? Do any of you who used a panel to cover the inside walls and ceiling have any thoughts, or regrets, or wish you did anything differently?
The best answer will win the West Philly lottery: I'll send you a dollar a year for a million years.
Thanks for reading.
I need to cover the inside walls with something, and though I have ideas, I wanna see if anyone else has done something similar. I like the ideas of finished wall panels, though I'm not thrilled with the options I'm seeing: white beadboard, cheesy fake brick, etc. The other option would be to use thin plywood, like lauan, and then paint it -- I wanted a prefinished panel so I wouldn't have to bother with painting, but if the prefinished panels don't thrill me, I may go the lauan route.
What did you all use? And the big question: do you like it? Am I overthinking this? Do any of you who used a panel to cover the inside walls and ceiling have any thoughts, or regrets, or wish you did anything differently?
The best answer will win the West Philly lottery: I'll send you a dollar a year for a million years.
