Neu finned or smooth

[Mark Fradkin]

I have my eye on the Neu 2.5d moters and I see the finned is back in stock.
Is the smooth can a better fit? I have a supermaxx suspension . Gorilla single
motor mount, Quark 125b/ monster heatsink w2 fans. I also run spyder 8
diffs. Currently I run Wonderor 8xl with apachee 3700 5s. I plan to continue running 5s. I have plenty of room for pinion clearance . Do the fins diminish any clearance? I also run a Strobe 51, with 16 18 20 pinions. mostly bash
in the sand at local beach.