I am now in a med/surg ICU as a traveler, and I wish I had stayed in CVICU. I did 2.5 years in a teaching hospital CVICU and it was wonderful experience.
I was challenged EVERYday, and the drip titration experience was one that I hope I can get to feel again as a CRNA.
There is nothing like optimizing someone's cardiac index with Nipride and Epi, or making a DTAA's toes warm and pink with Nipride. Additionally, the experience with heart/lung transplants is worth it alone. We often used Ventricular Assist Devices as a bridge to transplant, and the connections made with those patients will last a lifetime. Seeing a 16-year old on deaths front step on a BiVad, epi, SNP, NTG, Lido, milrinone---getting fluid and blood constantly and then to see them going home after getting a great heart. If that's not enough, the cool equipment you get to use is great---Ventricular Assist Devices, Balloons, CVVHD (my least favorite).