While the Switch Pro Controller has its flaws, it still edges out the 8bit Pro + by a small margin due to having the ability to turn the Switch on, as well as utilize HD Rumble properly and amiibo functionality. With newer revisions having alleviated the most glaring issue being the +Control Pad mixed input by raising the pivot by a margin yet again, compared to the Xenoblade Chronicles 2 controller, the problems with the original have all but been ironed out.
I'm actually checking to see if there are firmware updates for the 8bitdo Pro + as even at max rumble, I still find the feedback non-existent to too soft on certain games such as Daemon X Machina and Warframe. I can barely tell if I'm firing unless it's a sustained heavy barrage.