The time has come, the walrus said ....

I have now happily run my Dell laptop for 6 years, but there are times when it is struggling despite its high end Processor    Intel(R) Core(TM) i7-2720QM CPU @ 2.20GHz, 2201 Mhz, 4 Core(s), 8 Logical Processor(s).

My immediate thought was to look for a new XPS 17 but there isn't one. 

The Inspiron looks a bit weedy in comparison, and the Alienware is too power hungry with ridiculously high end graphics cards.

Why has Dell stopped producing a 17 inch version of this amazing laptop?

What is the best alternative