Enclosure Question: Height vs Depth

[RickySRonin]

Well, the T25 has the wider floor space compared to the T20, but would the height still make that your choice?

Yes even though the T25 has the wider floor space compared to the T20, that 18inch height kinda knocks down the value in my opinion. For a boa you're better off with that added height, for a mainly terrestrial species of snake you'd benefit more from the wider floor space.