OSR2+ works same as OSR2 through SLR - It works directly even with streaming scripts → https://discuss.eroscripts.com/t/joyfunplayer-3-1-2-osr-tcode-player/1666/57
OSR2+ will only give you main axis scripted playback (without additional multi axis movement)
Quest 2 cpu is powerful and its the graphics card that matters the most (Quest2 covers your bases up to 8k) so best to use quest 2 power - You dont need to be connected to PC at all for Keon if you go through using SLR Interactive here →
If noise is not a factor - then Id say for sure get the OSR2 - it plays back scripts 1:1 as intended, stroke depth and accuracy is all you will ever need - relatively easy to repair - and most importantly, best feeling/immersive real-like sensations (with a good script ofc)