I have a Beyer Manufaktur 880 (32 ohms) driven by a Benchmark HDR. They are very good. I am very pleased with them. In my opinion any dynamic headphone would be an incremental improvement (if any). But, upgraditis kicks in once in a while Are electrostatic/orthodynamic headphones worth the money? Is one of them better? Cons: Stax are not mobile - you're tied to a bulky amp. Durability is a question mark for both (???). The membrane is in both cases microns - isn't that fragile? Manufacturing consistence - I've seen measurements on both that are way worse than others ... Check this for measurements Headphone Data Sheet Downloads | InnerFidelity Pros: The measurements between 20-200 Hz region look better than the measurements of any dynamic headphones. In general they measure very well. I'd like to hear your opinion. Are the planars worth the hype and money?