Its the same as going on any hobby forum and asking that question.

What is the best fishing tackle?

What is the best engine for a car?

What is the best long range rifle?

etc

etc

etc

etc

etc

etc

etc

etc

Every month or so another newbie asks this question. Im not hating so don't take this the wrong way, but its about the most subjective question that could ever be asked. Couple this with the fact that very few have tried every possible grind and size, and doubtless any having tried every make!

Yes you may wish to gain opinions, but just read through the forums and you'll begin to see the picture you are looking for.

Remember there is no such thing as the best when it comes to an object that can be made in endless forms.