Innerfidelity and it's not even close.
Sorry Grado fans, Tyll's preference for warm sounding headphones with minimal ringing actually happens to fit with a sizable majority in this hobby. Beyond that, his articles are always well-written, witty and backed-up by raw data that, like it or not, gives his reviews a solid basis other than subjective opinion.
Also Innerfidelity is my number one go-to for headphone buying and Tyll's reviews haven't let me down so far. I could never place the same trust in Headfonia, or indeed, a random poster on Head-fi.
Yeah, Tyll is not a fan of Grado and openly states that. He has, however, been recommending their entry level cans for decades until recently. I can see his point, though. For a long time, I've read a lot about the strengths and weaknesses of Grado, and perhaps Grado has been slow to respond to feedback compared to the competition. But I believe Grado is starting to listen. For example, I have the SR325is. According to charts and many testimonials, earlier versions over emphasize the high frequencies. But the latest revision (with sparkly-silver color) doesn't exhibit any of this as far as I know. I've had two copies (from same store) and both sounded quite full without the sizzle. The style and fit is traditional so I think Grados attract customers who appreciate the retro flavor and serviceability. One thing they should consider is modernize the materials used for fit and comfort. this cable.. looks and feels like something from a car parts store - a radiator hose? Does it have to be like this? Anyway, I happen to like how the stock pads feel - could use softer/cloth cover though.
I wonder if he'll have a chance to try the new Grados?