Yes, smaller boats are definitely of higher appeal to me. Went on a Galapagos cruise years ago and the max amount of passengers was 83 - we had 80 on our cruise. Sadly the dynamics of that trip have changed and I don't know if I would as enthusiastically recommend it (it's become way more commercialized and you don't get to see nearly as much as we did).
The big ships have zero appeal to me.