Have used several of them, fireline metered, power pro, lead core, and mono.

Lead core is handy in that you don't need to let out much line to achieve the depth that you want. I seldom go longer than 100 ft. It also snakes behind the boat quite nicely making turns easy. However, it is quite literally like fishing with steel cable, the diameter is very big, and requires a big reel to hold a decent amount of it.

Fireline metered works just fine. I have no qualms with it. Nice and thin, no stretch, perfect amount of memory. No line counter required.

I like using mono, not sure why but it seems to catch more fish for me, I think it has something to do with the stretch. If you do not have a pretty limber rod or the drags set super light, you will lose a lot of fish on braid, the lure gets ripped away before the fish can get a good bite on it.