[getawayFK]

It also depends on a lot of condition (like first of all how much you are willing to pay for your line, how strong you want your line to be, will u be targeting species that tend to run into the coral seabed and mess the line or you'll be blue water hunting etc...), and accordingly, and you have different options:

1- Kevlar line: Those are the best quality I guess but also the most expensive. They are very resistent to abbrasion and tear, they are very solid and can handle up to 450lbs or more. They are also thinner than dyneema line (therefore you can fit up more line in your reel than you would do with dyneema line). They dont burn easily so for the rough end of the line you will have to super glue it.

2- Dyneema line: Those are pretty good too, and I am using this, and they come in different strength and thickness. A more economical choice than kevlar line. It is easier to hold underwater than kevlar line (when playing a fish) but it is less resistant to abbrasion/tear than kevlar, and you can select your thickness and strength accordingly. I use 30m of 250lbs dyneema line and Im pretty satisfied with it performance, and it is still thick enough to give me a good grip when playing a fish...

3- Monoline: I don't think this is a favorite choice for spearos, but still some use it. I never used it in spearfishing to judge on it except for the 6m of mono connecting the shaft to the swivel which connects the reel line. Monoline give you a lot of strength per cross section, but the thicker the mono, the more it tends to distort and lose its original shape when stored for long periods. Also mono is harder to grip and is not that cheap either. Mono isn't a very common choice among spearos as a reel line.

4- Other synthetic lines such as those polyester spectra or nylon spectra line: I don't have much experience with those, but I think they are also a good choice and some of those lines are extremly tough too...

I hope that was useful !

Regards...