hd1500 compared to the hq-2300

I have the hq-2300 from creative this headphone cost 100 dollars, i like it a lot but for that money i don't think i get the real dolby sound like the pioneer se-dir800c and philips hd1500.
Oke this headphones cost more but i don't mind but is it worth to upgrade.
Or is the dolby sound the same and must i sticj with my hq 2300
And can i connect to the xbox 360 with a optical cable because the philips don't have a optical input