I'm with @Kyber417 , you're not going to do much better than a Spectrum, unless you want to upgrade to the Aeon or Nexus Pro. But that'll mean your darts will be difficult to use with your secondaries. So better yet, get an Aeon AND a Nexus,

The Dart Zone Savage Spin is also a good flywheel primary. With 45 rounds at 90 FPS, it's no slouch.

I would suggest you to use clear RapidStrike mags

Yep 18 round mags are better, curved mags have no purpose whatsoever, the only reason why banana mags are used is for the firearm world. And no I do not recommend you buy the Nexus or the Aeon pro, you have lightly modded and stock blasters, having a vest doesn't mean your not stock class. Your weapons are all stock, and I do not recommend building a whole load-out unless you play with more than 10 players like me. I wear black Khakis, a black long sleeve, a U.S Marine Paratrooper vest, have a Aeon Pro, modded retaliator (100 FPS) and a Rival Helios. It also depends on what you want to be and what role you want to play.