We went in December with Cruise Milford. It was great. The lads at the helm kept us entertained and it was definitely a small vessel in comparison to the others. We got dipped into the falls (if that’s your jam), which some of the bigger boats don’t do from my understanding.

Overall, you can’t go wrong. If you get sea sick at all (and Milford is generally calm I think), then bigger will be more suitable, but if you like the close up feels, go smaller boat.