Okay, I'm a fairly techie guy, but I'll admit that I've been out of the loop for a while when it comes to computers. I'm in the market for a new laptop @ the end of the month and I want to make sure that I get something that's going to run Logos 4 better than what I currently have (a Dell Studio 1737). I've narrowed it down to two machines, but one is $400 more than the other. So, the main question is, in your opinions/experience, do you think machine #1 will run Logos 4 well? I want to be a good steward of my money (and keep my wife happy LOL), so if I can get away without spending the extra $400, she'd appreciate it. Of course, I always know that I should buy the best that I can afford, but economics always play a factor 
Will the the faster processor, increased graphic memory & faster HDDs give that much greater performance? $400 worth of performance?
If I can save the $400, I can use those savings to go toward some pre-pubs that I have coming out this month & next.
Thanks for your help!
Machine #1 - HP Envy 17-1181NR - $1400
Main Specs: Intel Core i7 720QM(1.6GHz), ATI Mobility Radeon HD 5850 (1GB), 6GB RAM, 750GB 5400rpm drive
Machine #2 - Dell XPS 17 (custom built) - ~$1800 (w/tax & shipping included in price)
Main Specs: Intel Core i7 740QM(1.73GHz), Nvidia GeForce GT 445M (3GB), 8GB RAM, 1.28TB (2x640GB 7200rpm drives)