Best sounding PC for adudio may vary

Hi I have owned many many different PC,s . From Desk tops to laptops but I have found that HP lap tops the new I5 quad core and 6 gig ram 640 gig hard is my newest toy but it is by far the best on my stereo. It has a much more laid back sound than my Compaq or my old Dell. The Compaq I found very forward with lots of mid bloom that could sound great on another rig but this HP is my boat. The Dell....Well honestly the Dell both laptops and desk top both just were boring and just never made think " this is the best it can be" I knew it was lacking and no one had to tell me that dell isnt what you want for audio. But some swear by it so more power to them. It may intergrate perfectly with there rig. I want to know what you guys Think? Tell sound differences you have noticed between different computers and by the way if you cant tell the difference in the sound between computers ....well...Thanks anyway?