What store gear is worth it

so back when i first dl the game i got a bunch of helix credits for no reason, now i'm done with the game & both dlcs & maxed out the level cap too. i still have 1800 helix credits left over but i have no idea what to use them on since most in game gear is better than the store stuff. i've got all the maps & boosters but yeah still got 1800 left over. really want to know what gear u guys think is worth me getting with it :) EDIT: i know about the bighorn bow lol dw i have that