HP/Compaq :: HP Envy 15 Vsdv6t Quad Edition

Any views on the differences (and value) between HP Envy 15 and HP dv6t Quad Edition?

As far as I can see, with the maximum upgrade options selected below, for an additional ~US$1,300 all the Envy 15 gives you over the dv6t Quad is: 16GB DDR3 RAM instead of 8GB (valued as $500 difference on the Envy 15 customisation page) 1GB ATI Radeon HD 4830 instead of 1GB Nvidia GeForce GT 230M external vs internal optical drive (query whether this is an advantage, weight vs convenience) 1920x1080 instead of 1366x768 display extra 9 cell battery (valued as $125 difference on the Envy 15 customisation page) it's a bit thinner, lighter and 'prettier' What do you think? Is all this really worth $1,300? (Or if you accept the values given by HP of the extra RAM and battery, is $675 a fair price differential for the HD4830, higher display resolution and overall build?)

As a follow-up question, what do you think of these specs generally - or is it worth waiting for further customisation options for the Envy 15 (eg, the dual SSDs in RAID 0 promised by all the HP marketing) and for eventual price drop (when will either of these occur)?

The following specs / upgrade options were used for the above comparison, all from HP Direct, major differences are starred...