The answer is simple based on everyones replies and your replies... You want too much from what you are willing to pay.

You will never get the stability of a true workstation by going with a consumer class desktop. Not to mention 'awesome' support. As others have suggested you need to find a reliable builder have them build you what you want using QUALITY parts, and then have them offer you a 1 year warranty, and a service after that based on an hourly rate.

I build all my own systems, and use quality hardware and my systems last me 2-3 years and then my wife another 3-5. My system is approaching 3 years, and I want to get a new one but can't justify it because it's working perfect! The system my wife is on right now has been over clocked for 5 years and we are ready to replace the primary hard drive other than that no failures, and only one OS re-install. We keep our systems clean, lean and don't download anything unless we need it. Pictures are fine, but nothing installable from 'friends'... only software that is needed nothing for 'fun', and no 'browser add-ons' that cause problems.

As I see it you have 2 options.
1. Buy enterprise level workstation system from Dell and support.
2. Buy what you want from newegg and amazon and have a local builder put it together, warranty it through the manufacturer and have them provide support.

It's up to you, but you really are never going to get workstation grade performance from ANY consumer system.