(Disclaimer: I am not a turf engineer; my degree was not awarded by CIT)
Superior? Unless one has hardpan, deep aeration is overkill, as
most compaction occurs within a few inches of the surface. If leaving
cores on the turf is a concern, drag after aeration. The cores can
either substitute for or extend a topdressing, so it isn't really an
As far as similar in cost goes, one must look at cost-of-ownership.
What's the mechanical complexity of "high pressure deep aeration"?
Does one need a tractor with a power-take off? What size tank does
one need for a reasonably sized field? How maintenance-intensive
is such a system? It seems difficult to believe that such a system
won't require more maintenance and downtime than a simple aerator and
drag, even if the capital costs are within an order of magnitude.
 Center for Irrigation Technology