This is Irwin Allen's best series.
Admittedly, this is damning him with faint praise, but hey.
I also think this is better than the feature film VTTBOTS from 1961 and way, way better than IA's version of Lost World (also featuring Dave Heddison wearing a scarf and footage that would be reused in several eps of the VTTBOTS series). Again, I am damning IA with faint praise, but surely, the man was a schlockmeister.