Mine are the custom HH.357 spec Hybrid versions at 2.0 ohm from the Avid Vaper at $24.99 each. I now have five of them in my arsenal. They are by far the very best atomizers I have ever tried and I've tried quite a few. The difference in draw, flavor, vapor, and just overall performance runs circles around any atomizer I've used in the past. Just recently I tried one of the others and it just didn't do it for me anymore. The price is much higher than others, I agree, but to me it's more than worth it. After trying these -- even if it cost double the price -- I'd still buy them. They're that good.
Some people might not like them because there is a learning curve to using them and it takes a day or so to properly break them in. If you follow the directions on their site, it gives phenomenal performance and more than the bang for your buck, IMO.
ETA: Also, on their site they say never to dry burn these. I vape dark, sweet juices, which gunks up the coil inside faster than other juices. When two of mine were no longer working like they should and cleaning them per their instructions by soaking in vodka (I only use premium vodka for this), wasn't helping I contacted them. They offer a service for between $5 - $10 for five atomizers to check into it and rebuild if necessary. That's very reasonable for something that is said to last nearly a year or more vs. an atomizer that only lasts a few weeks at most and then you throw it away.