How about a 110mm Miche Primato? The low price scares a lot of people away, but it's symetrical, the taper is ISO and it mounts like a Phil, so your chainline is adjustable. I got mine from Universal Cycles, but I see the 110mm is out of stock. The picture they have on their site is not what it looks like. It's a cartrdge with no threads and two adapter rings, just like a Phil. I haven't had any problems with mine, but it doesn't have many miles on it.