Right now, I'd say EBI just because they have have more quality options across their brands than any other company. I really like my Radical stuff, and they'd be a strong second.
The problem with falling in love with any one brand is that their relative standing can change quickly. EBI has gone from really good to bad to really good again over just a few years. Storm has some legendary balls and has been consistently good, but they're in a period where they've spitting out more mediocre balls than they should.
If you're not watching carefully and open to having a mixed arsenal, you're missing out. It's rare that one company has the best of breed in every category at any one point in time.