I have an SSL Nucleus. I haven't used the others so I cant comment on them. I LOVE my SSL! It takes a bit to set up but once it is up and running the way you want it to, its great. It is expensive, but when I was looking I didnt have an audio interface so it was perfect for me. And I guess thats where the catch is - its whatever is perfect for you. I use the SSL with Logic and it works great together. Ive never had an issue. And for controlling plugins etc is amazing - the flip button is so handy - you can control things with either a knob or a fader. I come from a live music backround so I suck using a mouse - thats why I love the SSL. it takes alot of the mouse controls away. let me know if you want any more info - happy to help.