[azapa]

do you have a spear fishing supplier on your Island? if so, go in and ask, the staff will probably know your waters well and be able to recommend the most appropriate gun.

here you will get a million answers, my faves: Pneumatics from seac-sub, great, accurate, fast, deadly and cheap. Euro guns from Omer. I use 75 to 90CM length.

I think JBL is seen to be clunky and low - end, but I'm sure they work. Good luck and be safe