OP. Have you thought of using a copolymer line for mainline instead of fluoro? I much prefer copolymer over mono as the stretch and line twist isn’t as bad. It’s pretty stiff compared to mono too. Then run a fluoro leader. Save you some money if you have multiple reels to do.
Also spoiling your reel the “wrong” way and increase lone twist a lot.
https://youtu.be/GiMYiwFT98A
But to your actual question I use Seaguar leader material for pretty much everything. Wouldn’t use it as a mainline as its to expensive.