1525 is good if u dont need polygon crunching graphics.. it only have an integrated lntel graphics card.. since u need a graphics card, i think it good for u to go with xps1530 with 8600.
i got the ep-630 with my Dell 1520 from India itself.........and yea, all the noise cancellation buds that u see in the configs of various models of Dell laptops are EP-630's. Infact u got the EP-630 with the now discontinued XPS 1210 also.