I've no pretentions to be a speed-solver (at my age) , but I just love solving cubes. I find I prefer stickered, except for the 2x2 & Megaminx.
I think the stickerless ones look cooler, but when it comes to actually solving them, I find stickered ones easier to find pieces on.
I do think i have a marginal increase in recognition on stickerless puzzles since there is objectively more color available to the eye but I much prefer the look of stickered cubes. Classy . Plus, I'm shade obsessed and enjoy swapping stickers.I'm the complete opposite. Recognition is much better on stickerless, but stickered cubes look cooler to me. I see a lot of blind solvers using stickered cubes, which I find interesting.