[vikingerik]

I've tried going both ways with vowels (lots or sparingly), and I found it seems to work better to conserve them. Vowels are where you can maximize information by inference rather than by spending your limited slots, by downplaying or ruling out more vowels once you've got what are likely enough.

I always go 5 new letters for the second guess and usually for the third. Knowing more letters are in or out is a lot more information than finding out the same letter isn't in a second position. Particularly for Quordle, you really want more letters through three or even four guesses.