I like Metagenics'...it is enteric-coated and they add a bit of natural vanilla to it so you don't get any fish burps. I've tried Carlson's...but hated the repeat!!! Metagenics is a professional line...harder to get and quite expensive. Ethical Nutrients is there retail line, but I don't know if they carry a fish oil or not. Biogenesis is another professional line that also has an enteric-coated fish oil cap...very similar to Metagenics, but it costs less.
Yes, I have seen Dr. Larson's site before...great info!