New Pro Hub all setup, transferring the settings from the old hub to the new one was painless in the Hue app as it transferred everything over flawlessly as I only had one bridge, took about 15 to 20 mins to transfer. As expected I had to reconnect it to Apple Home again and that was a massive pain in the ass as it kept failing no matter how I tried, after trying for about the 10th time it finally paired to Apple Home somehow and so far all is working as it should over Wi-Fi and Ethernet, speed and responsiveness is the same on both connection types.
One massive improvement is the popcorn effect with matter through Apple Home, on the old bridge if I had something like six ceiling lights grouped up, they would turn off quickly, within 2 secs but one after another. With the new pro bridge it's a massive improvement as the grouped lights now go off and on almost in sync, it's now almost as fast as the old native HomeKit setup and pretty damn close as the native Hue app, you can see an ever so slight popcorn effect so it's not eliminated fully, but's a good 95% improvement over the old bridge at least.
Even just dragging your finger over the light colours in Apple Home, it's a lot more responsive and snappy when doing it to grouped lights. Really happy with the bridge so far, worth every penny and at least if Hue comes out with something that needs the new bridge, I'm good to go.