Honestly, I wouldn't get yourself worked up over the decision. As you can see, everybody may have a preference but as long as you're meeting the snake's needs either enclosure will work out fine for you. Snakes have their individual characteristics at the end of the day like Caitlin mentioned, so if he chooses to use the height or not all that matters is he's thriving.
Yeah, you're right! I'm sure she'd be fine either way, I'm just a very indecisive person haha, just wanted to get the opinions of other people who have experience with this stuff, considering I'm going to be spending $500+ on my snake's forever enclosure.