#1
I was just thinking about it, and are thicker or heavier strings better for low tunings like dropped Db and C than a light or medium string? Does it not make a difference?
#2
Yes, they're better for lower tuning, but, you'll notice a lot more tension when they're tuned in standard.
#3
Yes, heavier strings won't flap around as much as regular strings when you go to a lower tuning.
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#4
i put a thicker low e string on for dropped d tuning. the one that came with the set was very rubbery feeling.
#5
I was trying to play Queens of the Stone Age (they often play in C Standard) and he uses Super-slinky strings, and it was almost impossible because the strings were so flimsy
#7
sometimes they are better.

It all depends on your guitar. The scale length, bridge type, how it's set up.

I have a guitar set up for CGCFAD, with 9-42 strings. Due to the way its set up, thats the best string gauge for that tuning.