The gel ink group has several of my Top 5 favorite pens. The Uni-ball Signo UM-151, aka the DX, is my number one gel ink pen, but not in blue black ink. I think Uni-ball’s blue black ink colors fall behind both Pilot and Zebra. The pen itself needs to be part of this group for its excellence, I just prefer other colors in it.
The two Pilot Hi-Tec-C models use identical refills with different barrels, and I prefer the simplicity of the original. The Maica isn’t bad, it’s more that i am used to and comfortable with the O.G. barrel. The Juice refill is awesome, but the barrel is just ok. The Sarasa Clip may be the best combination of everything in one individual pen. The FriXion model is cool to play with but I would prefer having the Ball Knock model instead of the Slim.
If I’m taking this specific ink color into consideration when ranking these pens, I choose the Zebra Sarasa Clip first, standard Pilot Hi-Tec-C second, Pilot Juice third, then everything else.