Delta fins are what CPE calls them . I believe its a trademark.
A finned end tank should give you more even airflow distribution. So many people are guided by costs around here lots will pick the Whoosh V3 because its more affordable and will work cores themselves are pretty much identical( difference in the end tanks) . Is the CPE better only you can decide that
.
The other thing one could do is look for someone selling a used Whoosh V2
They have popped up used occasionally .
In reply to
@SST ya Wagners are dope I think Ron has them on his site they are very expensive though. Also one does not need a Wagner unless they are shooting for big HP numbers IMO.