Pilot Juice Up
The refill is what shines here. Thankfully the pen body keeps up with a nice rubber grip and solid knock click. The refill is one of the finest micro gel pens out there.
Variants: Range of colors and tip sizes. The 0.4mm is my top pick.
Refill: Pilot Brand G2 refill size. This is my prefered refill for pens that only fit Pilot Brand G2 refills.