I woke up with my ears burning...
We have stayed at TIR three times, and Huracan... eleven. Ugh. They're very different experiences, but both excellent. TIR is awesome in every way... lodging, food, staff etc. The diving is very good. However...
Each time we were at TIR, we always found the diving at Halfmoon Caye to be the best. On a trip back, I asked Brad the DM what the roof on "that island" was, that was just across the way from Halfmoon. It was ITZA Resort on Halfmoon Caye. That led to some noodling about on the Interweb, discovering Huracan. I think the deciding factor was the single-supplement as we had a girlfriend coming with us.
Now, full disclosure: We have been to Huracan so many times, that we have become good friends with the owner and manager. As a result, we get a great rate, but honestly, that only makes a sweet trip sweeter.
As others have mentioned, Huracan is a "fewer frills" operation than TIR. This is not to say it's inferior, just fewer options to amuse yourself. The rooms are gorgeous, and the food is amazing. It has evolved since our first trips there. The lack of AC isn't an issue for us. Being from Canada, we're just happy to be warm when we head down to Belize. The fans are adequate for us. I also like the smaller carbon footprint. TIR runs diesel generators 24/7, and as a result, AC, unlimited desalinated water etc. Huracan is 90% (or so) solar power, augmented with a small gennie that runs during high use times. Similarly, composting toilets, vs septic system etc.
However, my original feeling about the diving was valid. The diving at Huracan is vastly superior to the great diving at Turneffe. More walls, fewer people, easy access to Halfmoon, and an entirely superiour Bluehole dive. (Huracan is 12 minutes from the hole... so we are finished our dives before the bog boats arrive from all over the place. We will be the only people there normally. We do a fair bit of deeper diving at home, so we sling stage bottles in the Blue Hole, and make it a real dive, rather than a quick bounce with a bunch of marginally-capable mobs kicking the crap out of everything. (In fairness, I know our dive is not typical of Huracan BH dives, but the lack of crowds definitely is standard.
So really, you can't go wrong with either place. If diving is your priority, go to Huracan. If diving is important, but you enjoy a few more creature comforts, try Turneffe.
Here's a shot of Missus Stoo in the GBH. There are a few other peope around someplace, but we're doing our thing.
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