I like dotted grid as well. However I like Pilot Juice Up 03 gel tip .3mm. They are very precise, write in many conditions, and I’ve never had one run out of ink.
If you like fine points Uniball's Signo RT1 write very well with 0.28mm tips. Ink capacity is not their strong point though. Pretty sure I was going through several a semester.
I found that the Zebras, while certainly attractive and satisfying in the hand, write like crap (rough feel, inconsistent ink flow). My favorite pen these days is the Pilot V5 RT, but I wish I could throw the refill for it in a body more like the Zebra 401.
I used the zebras for many years but like the smaller point on the JuiceUps and the gel seems to work better than ball point. I miss the metal body, but I would fiddle with the clip and eventually break them off.