Dell is a real good brand but you need to pick the right model.
i agree that some new models such as " Inspiron" did not have much success. this dosnt mean that Dell is not good.
I got Dell Precision M6300 , 17" screen , Nvidia , 4gb Ram , 2.2Ghz Dual intel core, bluetooth , 500gb Hdd , Atheros wifi card ecc...
Trust me , its affordable ,a bit old and heavy , but look no further , cause this is an amazing peace of hardware.