New Gateway comp for FSX

I wanted to buy a new desktop computer to run FSX. I was looking at the Gateway
Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=9&t=27520
Keeping in mind that 'NEWEGG' is a reseller (doesn't make anything themselves) they have an excellent reputation.First, just to cover my butt, let me say that I have NEVER DEALT WITH THIS COMPANY BEFORE.
Keeping in mind that 'NEWEGG' is a reseller (doesn't make anything themselves) they have an excellent reputation.First, just to cover my butt, let me say that I have NEVER DEALT WITH THIS COMPANY BEFORE.
Keeping in mind that 'NEWEGG' is a reseller (doesn't make anything themselves) they have an excellent reputation.First, just to cover my butt, let me say that I have NEVER DEALT WITH THIS COMPANY BEFORE.
Keeping in mind that 'NEWEGG' is a reseller (doesn't make anything themselves) they have an excellent reputation.First, just to cover my butt, let me say that I have NEVER DEALT WITH THIS COMPANY BEFORE.
well looking at cyberpc did help me but i cant choose graphics what should i choose ati radeon hd 5970 or nvidia geforce gtx580?