I think the 47GB includes a lot of the warped stuff. Heavyocity is usually pretty good on basic recording/sampling quality - there is no way the straight piano is 47GB
For playable, straight piano, I would put Noire, Ivory American D, Ravencroft, Galaxy Vintage D ahead of Ascend. Garritan and VSL are in a different league.
You can certainly get excellent piano tracks from Ascend, especially in certain idioms that are not requiring a more traditional "classical" sound or that use moderate reverb (the release anomaly). If you are targeting the typical Olafur Arnalds Scandi/Brit drama/crime soundtrack vibe, Ascend will do fine (although I would still prefer Noire). Ascend is all about the heavily sound design stuff. It is telling that the default snapshot that loads is not the straight piano but a heavily processed one.
I use Ascend, but I will always load Noire, VSL, CFX, Ivory D or even the Spitfire OA Toolkit/Stratus before Ascend for "conventional" piano. I also own Fracture Midnight Grand and Woodchester pianos, which are my go-to's for the felted, synth pad-backed type of thing.