I am sticking with SPlat until it stops working.
I already have Studio One 3 Pro (still have a problem with v3.5 onwards relating to the new low latency features - I have printed off the latest guide on this here
https://forums.presonus.com/download/file.php?id=7582 and will see if I can solve the problems) and have also just added Notion at crossgrade price to cover my notation needs. I am dual booting Windows 7 and 10 but use W 7 about 99% of the time. So I could also try the latest S1Pro in W10.
I already have Cubase Elements 9 and will upgrade to 9.5 for £17. I quite like the workflow, chord track feature and some of the instruments. Decided against Cubase Pro as it is probably overkill for my needs. I am hoping that the GM mode in Halion will do as a replacement for TTS-1 which I find very useful and use a lot for auditioning MIDI files (thanks abacab for the tip).
I already have Reaper which I never really spent much time with after buying SPlat. I quite liked it whne I did use it and it had come on a long way since then.
I decided against Mixcraft after trying the demo. The workflow I use a lot with Antares Harmony Evo (mentioned elsewhere so I won't detail again here) doesn't work as I would like and it also did not pick up my full Melodyne Editor. I see a few people on their forum mention similar issues with Melodyne. Anyway, I think I am covered as far as DAWs are concerned so don't really need Mixcraft as well.
BTW my goto reverb is Breverb 2 in SPlat (especially the Cathedral preset). I have loads of other reverbs but I just love the sound of this so I will probably buy the full upgrade - around $83 in cart at JRR with free Galaxy X-FX .