Here's an interesting video I found for those who are in this GB:
Sounds quite different! Part of it is probably due to LED vs no LED.
This was my video, the Kmac is 59g clear and the Eagle is from my friend, assembled with 62g clear, I just did a quick comparison. The different in sound firstly come from the lubing, the kmac and the eagle were lubed by different ppl as u can see in this video that i press the switches only, the sounds are totally differnt.
Secondly, the eagle was assembled with 2x3x4mm led. If u put on the GMK keycap, it scratch the inside of the keycap and it will make keycap can't be bottom out, it acts likes an unexpected O-ring lol, however it works well with SP keycap. My advice is assembled with 1.8mm led.
I personally dont think the springs can create the different in sound that much ^^
Best regards.