Dodgealum,
Given your stated preferences, I agree with Tfkaudio that the Lyra line is a possibility. I don't know about the specific compatibility of any of their cartridges with your tonearm, so this is based entirely on the nature of Lyra cartridges. I've owned the Lydian, Helikon and I now have a Titan. The whole line is characterized by clarity, speed and dynamics without being overly lean, sibilant or edgy. Lyra cartridges have a reputation for requiring arms that can handle the high amount of resonant energy transmitted by the cartridge. I've heard Lyra cartridges work well in an SME 309 arm, a Graham 1.5t arm (also a unipivot) and my Vector arm.
On the not quite as fast and dynamic front, but, still very lively and engaging, I would suggest the Transfiguration Phoenix. It is one of the better cartridges that is not extremely high priced. I heard that cartridge in a Naim Aro arm, which is another unipivot, so I think it should work for you. I have a Transfiguration Orpheus myself. That is a VERY fine cartridge, though a bit more expensive than the Phoenix.
One of the "fastest" and most dynamically exciting cartridges I've heard is the VdH Colibri. That is a very expensive cartridge with a reputation for being tempermental (some are good, some not so good, they have to be sent back for the manufacturer to retune, etc.).
The Decca London is a very high output moving magnet that is very dynamic and exciting. It has a reputation for being really hard to set up and match with the right arm, but, it sounded quite good to me.