There are a few factors to take into consideration with said question.
Day of the week; AM
Mon-Wed; I would go with either the Iridium or Yellow 7’s.
Thu-Sat; I would go with the Crystal or personna.
Day of the week; PM
Mon-Wed; I would go with the Feather or Astra.
Thu-Sat; I would go with the Iridium or Personna.
That rotation is ok if you live on higher ground with good drainage, if you don’t then try this.
Mon-Wed; Iridium’s.
Thu-Sat; Yellow 7’s.
Use the left over blades as spares, BUT.
If you live within sight of water, fresh or salt you may want to stick to the Feathers. Both AM or PM.
That being said, if you have traced your family history back far enough and found descendants that worked in either the wool or cloth industries, you may need to look at this rotation.
Mon; Feather
Tue; Yellow 7
Wed; Astra
Thur; Personna
Fri; Iridium
Sat; Crystal
Don’t forget to take the tides and moon into account, hope this helps.