I priced out a high end Dell 2 months ago and it came to $4675. I did the same thing at www.pro-star.com (model 5724 w/ exactly the same hardware) and it came out to $3,200....and it beat the Dell (the one listed as fastest laptop on THW site) in 3D Marks.
I have had Tosh laptops and was a IBM Stinkpad snob for many years refusing to use anything else.....but IBM abandoned the performance market well before Lenovo thing. That left Voodoo, Widow and Alienware for the performance market all of which at some time or another used Clevo as their chassis supplier.
Matching the Tosh configuration you linked to I camne up with $1,543 (same stuff / 3 yr warranty) which is still $250 cheaper than the Toshiba. My beef with Tosh is that they tend to be stingy on performance options. A 5400 rpm HD gonna be areal drag for example.
You can customize the 6624 here to your heart's content adding faster HD's, more memory and just about everything. I priced out a model 5714 which has a 17" screen and it came to only $1834 before adding the extra 2 year warranty.
With Dell's 3.32 rating at resellerratings.com, I wouldn't touch them with a 10' patch cord. We signed a deal back in May w/ Pro-Star to supply our professional society w/ laptops (2600 member organization) ... so far the experience has left us with nothing to complain about.