[What is your most versatile guitar. (And why)]

My most versatile used to be my sg special

But now it's my 335 for with 57 pafs.....

It has a great sound with or without an amp and I can get such a broad range of tones outta it

I love it

[Gibson sg Setup questions?]

I would change the brand of strings u are using as well.  I don't understand people breaking strings as I can replace strings on my sg, 335, or les paul and not break one for a year and I play pretty hard with a .88mm tortex flat pick.

You definitely need to adjust your truss rod but try some gibson brand strings.

Everyone raves about Ernie balls and d'addarios but in my experience, gibson strings are the best you can get, they are nickel wound and don't corrode