I’ve got both but my Komplete is the ultimate version. Got a great upgrade price in the sale to go from Komplete.
Purely on a financial basis I’d go for the upgrade to Komplete.
If you had to choose one over the other then it comes down to what you personally want and need. Komplete pips it for me with Guitar rig and I like the pianos better. If I owned neither I’d get Komplete.
Getting both is the best option. Cuts out any thinking which I like. But this does make a mockery of my first point.