I went for the standalone version and I am glad that I did. It's the center of my studio, and I don't need a computer running. And it is perfect for the way that I work, doing the track creation stage with the Push 3 and other instruments in the studio, and then later I send it to the computer for a mixing and mastering session.
Gosh it’s a no brainer. Still rocking with the push 2 and yes I probably need to upgrade but I wouldn’t go any further than the controller mode. Without vst support - you c could basically buy a MacBook Air or almost a pro aswell as a controller. Better value and must better cpu. I could just imagine the battery is good but will degrade in time so it’ll end up being a controller long term. The lack of an xlr is crazy aswell as secondary headphones. I could even get a native instruments mk3 plus a push 3 and still be miles ahead