I compared the X26 to the Pontus II. I spent two months trying to decide between them. Finally I choose to keep the X26 because it had a more open, detailed, and spacious sound but the differences were small.
I now use the R26 which I think is quite a bit better than the X26 or the Pontus II. If you want an x26 I'll be happy to sell you mine at a good price.