Calvin,
If you had never had a peach before or a fig and tried one of the rock hard things at the grocery store you would think peaches and figs were awful. Same applies to the dragon fruit. Iamkriya and I were down in south Florida getting some lychee and mango trees and the place had two huge screen houses full of dragon fruit, I guess they sell the fruit. They said it is wonderful. They invited us back in August for a sample when they are ripe. Ryan and I each ended up buying a dragon fruit start. 18" tall for $5....how can you go wrong. Then the other day someone sent me fig cuttings and included two dragonfruit starts, a red and purple as a surprise. I hope to see what a real dragonfruit tastes like in a year or so. Like you I have only had them from the grocery store and they were awful.
Here are the screen houses full of the dragonfruit.

aaa,
Love the screen house, how big is it? I know it is sort of OT but what can you tell us on growing the dragonfruit? What size pot? Mix? And that support, details on it?