of those 2 options, my preference would be the infinity amp, specifically for the additional adjustment knobs.
there's also the kicker key amp with a built-in dsp, which can help make it sound even better
https://www.crutchfield.com/p_20647K...7KEY200-4.html
i know some have insisted it's possible to run that alpine off the oem amp power wiring. regardless of that, i would still run new power/ground wiring off the battery. it's a decent amount of work to add an amp anyways, so adding a power wire really isn't that much more, pretty much all the same panels need to be pulled.