VICTORY IS MINE!! I got the Focusrite Scarlett solo gen 3, got it home and went through the process of getting everything setup. I used this instruction from youtube:
Initially I was getting an error that said. NO AUDIO DEVICE IS DETECTED PLEASE CONNECT AND ENABLE AN AUDIO OUTPUT DEVICE THEN START ROCKSMITH.
One thing that wasn't mentioned in the video was the fact that you have to download the drivers for the Focusrite Scarlett solo from the Focusrite website. I figured the drivers would auto install and that wasn't the case. (I would def get these drivers first) once I did this it fixed the aforementioned error. Everything else regarding setup was as per the video.
For audio I used a Livewire 1/4" male / 3.5mm female headphones adapter and some external speakers connected to the headphones output on the Solo.
I'm going to hook my amp up to it VIA monitor ports on the back later and see how that works out.
As far as the sound is concerned, it seemed much better than the realtone cable, there was zero lag and it was considerably more comfortable to play with a guitar cable of realistic length.
BOTTOM LINE: I should have done this a long time ago and would highly recommend switching over. No more error 10 / driver error / hocksmit error or any other crazy error i would get.
Hope this helps others who have been frustrated with the various realtone cable errors.