As a hardcore NDB & MW DXer, I also hope to use my HF+ with Studio 1 because of its very sharp CW filters and superior waterfall readability.
I made some tests using SDR# 1626 on the NDB band (where several beacons can be found within a few Hz) and found it quite poor. For MW carrier monitoring, I also found resolution disappointing (recorded files were used)
Will HF+ and SDR# allow to clearly see several carriers within 10 Hz and separate a couple of beacons within a few Hz too ? I hope so !