Sorry for the delay!
I use a custom set of strings that JustStrings.com made for me. Rest in Peace. Stainless, .25, .30, .55, .75. But I'm looking to change that up. .30, .40, .55, .75. The biggest issue is that I can't find anyone that sells individual strings and I can't seem to land an artist endorsement either from a string company despite other endorsements.