Hi all! i have a dilemma. I am trying to build a very fast portable system. I have gone with dell, and got an XPS with slightly loose hinge and they have offered to replace it because i had other issues with them - kudos!

The system has a 740QM (1.73GHz boost to 2.93GHz, 6MB cache) CPU, HD5730 mobility ati, BD reader, 1080p screen.

1) However i wonder if a 256GB SSD is worth spending an extra $800 and giving back a 500GB 7200rpm drive. (i see on pricespy these cost about $1100) Will it give me a no-waiting for booting and loading of stuff? Apart savings on battery will it save or add any weight? (i have a feeling the answer is no. also no i'm not that rich but am willing to sacrifice some dollars for getting rid of the bottleneck in my system)

2) I also wonder if i can justify spending another $500 extra on an 840QM - the only real advantage i see is that it comes with an 8MB cache. THe answer to this i believe is NO, for a 10% max improvement if pushed to the limit.

3) I hope i can restore my current system straight into the new system

thank you all!