want some opinions on this knife

saw a Gerber fixed blade (Big Rock) at manafont.

i don't know knife so i wanna get some opinions b4 buying.

already found some reviews online. the opinions are mixed.

the blade is 440A (4mm thick). some say it's too soft.

anyway, $34.00, worth it?

also, should i use diamond dust sharpener on this knife?

I just can't get past that price for a Chinese knife, since I'm used to paying $5 - $15 for good quality knives like SRM, Land etc. But Amazon has it for $28.

And amazon also sells plain edge version, if you don't like serrated edge.

440A is perhaps more softer, but it has good corrosion resistance.

ya, i know it's kinda expensive. that's why i wanna ask here b4 i buy. so amazon has it for $5 cheaper and it has the plain edge version huh? Thanks.