Im not a ton familiar with Sundown, as i am with a few other brands, but, the team is a 4" coil, vs a 3",.. for more thermal cap, and was WAS available with neo, or ferrite for a time. If you want one, im sure you could find either with a bit looking. I saw 3 neo teams for sale on a group just the other day. I have no idea when, or why or if, the TEAM has been discontinued, or just shelved for a bit. If so, that is a little odd. Wonder why ?! dunno.... But.... what i do know, from my own eye balls and ears:
Ive had the pleasure of getting to hear some NSV4's, (John Nolte's rig) and, Im a fan. If i ran sundown, i would more than likely run the NSV4. I feel, its a FANTASTIC driver. Has all the goods/wants, when im looking for a driver. From what ive read, and just seen, no personal experiance, the ZV5 is also beyond great. I wouldnt hesitate to run either. Both, along with a few others, i think, are some of the best to be had these days.