Uniball Signo 207 are my go-to pen for bar rushes, but if it's a slow shift, I use a cheap glittter pen. Makes our chef smile, because we hand write our tickets.

I will start by saying I am not at all an expert on pens, I only have my personal preferences.

I have had great experiences from what I remember with the BIC Atlantis. They are not too expensive to give a try, and they last a fairly long time.

My personal favorite which run a bit more expensive are the uni ball pens. I have tried both the Uni-Ball Signa 207 which are incredibly smooth, but I seem to remember it had a smudging problem as it is a Gel Pen. The other was the Uni-Ball Jetstream. I cannot remember if that had the smudging problem, but I know it was a great pen.

Hopefully you can test out one of those three pens to see if they would work well.