What WordPress Import Plugins/Tools do you use?

I tried WP All Import, but my concerns are:

It requires complex coding (a cost that I am trying to avoid getting started) to import changes only, rather than doing a full import. Right now, I am doing a full import every 12 hours to meet my Board's requirement of keeping data and photos updated at least twice a day. I can only manage to import approximately 1,200 properties in time before the next 12 hour import happens. This is not efficient.
It actually deletes my listings from time to time. It does not affect properties that I manually add, just the ones that get imported. WP All Import is setup to match against the MLS # and delete records that no longer appear (status change from Active to something else). I believe what happens is (for example), after 7 records during import, there may be a deletion requirement and for some reason it deletes everything else. In the end, I am left with ~7 properties on my site until the next import, which usually re-imports everything back in. WP All Import could not find the issue and kept trying to claim that my property import file contained ~7 records, but it always contained the full ~1,200. To their credit, they did refund my money in full.

I am looking for a more straight-forward solution that has some coding already done for real estate sites.