I'm sticking with Platinum until the bandlab version offers a compelling reason (for me) to switch. It's still pretty much the same thing and still does everything I need it to. Too soon to assess the new ownership IMO. I think give it 12 months and that should give a more accurate picture of where it's at.
As for the competition, S1 has a few nice features, but I don't use it because I can't get used to the fugly UI / transport bar position and in my experience it's certainly not as crash free as the fanbois would have you believe. I was hoping that the recent much hyped update to v4 would make me try harder to overcome the fugliness or better still eradicate it, but no. I'd guess that even the super fans were a bit whelmed by it.
Cubase - Been there done that many years ago (SX3 IIRC) crashed all the time and support was awful so I don't feel inclined to go there again. It may be different now, but once bitten and all that......
The only others I've looked at are Samplitude, which again has its good points, big value at the recent offer prices, but it's like stepping back in time - desperately needs a UI update, Reaper - again some nice things, but the menu layouts are painful and Mixcraft I found it hard not to think of as a cartoon version of a DAW. I'm sure it works ok, but it just looks a bit like My First Daw (suitable for ages 4-12)
No doubt some will say that looks aren't important, the tools are, but when you spend a lot of time looking at something it helps a lot if the view isn't off-putting. Platinum with tungsten theme is still the best look/layout for me.