Dell's Warranty is Worthless

I had so much trouble trying to get Dell PC to work properly, I must have called India multiple times in the last few months... Finally it is crashing...

They have offered to replace my pc with a new one. The question is? Is it worth it… I have 3 dell computers and yes their warranty service is horrible. They transferred me to five different people… Basically they are ripping off people by selling a warranty that is worthless… so I went through their investor relations department and sent emails till I got a call back from someone here in the states… in Texas which is where their corporate Headquarters are… So my question has the website helped steer people away from Dell.. They have lots of corporate clients.?  And why do I want a replacement?  They claim they will give me a new system… Not a refurbished one… How can you tell??