Right now the only aircraft that meets our needs is the P8. With a little effort, this information can be found on the DWAN, however the P8 is too pricey so here we are putting lipstick on a pig. I’m sure the P1 could be added to the list, however it was not on the document I was looking at (to be fair it was a few years ago). Nearly all other aircraft mentioned in this thread was. It was also based on a requirement of 10 airframes (I believe), but if we look at the roles MAISR and RPAS will play in the future, then Canada should be able to get away with fewer MPA (CMMA) airframes.
The ASW game definitely doesn’t need to be flown at low level. With the use of the Multi-Static Active Coherent system (MACS) you can effectively cover a vast area at a much higher level. This is something the folks on the P8 do very well (MACS = something we can’t do). Just ask anyone who worked with the USN on the most recent (2019) excursions.
As soon as Norway and the UK get their P8 aircraft up and running I feel Aurora crews will be left in the dust. We have much more in common with those nations than we do with the ones we signed on to develop a MPA with (Germany, Poland, Turkey, France, Spain, Italy and Greece). Basically the "C+" team of ASW warfare.
Once again everyone walks down a certain path and we think we can do it better by taking a different road.