I started with a 12' BnM BGJP rod, but found it a bit unwieldly and heavy for any long time constant use when flipping double jig rigs Livescope fishing. I received a 12' BnM Diamond Series rod and found it to be just as effective and much lighter in hand. I've only had experience with it for a couple of trips, so I'm not sure it would be what you're looking for ... if, in fact, you're specifically looking for a vertical jigging rod. I don't vertical jig often enough to determine if this rod would be the best fit for that purpose.
I'm sure it will be mentioned by other members, but you might also want to look into the Southern Crappie Rods selections. They are Kevlar rods, not graphite. I'd suggest looking at the T series rods, (like the 122T Stump Jumper) as the T series are IX7, whereas the regular series rods are medium IX6 ... and I've found the stiffer rods do transmit lite hits better. (just my experience)
Also remember : the longer rods generally have long handles (rod holder use) or extended handles (hookset leverage) so they're not actually as "long" as advertised, as far as length of rod from front of handle to rod tip.
Luck2ya in your search !!