Obvious choice: PC
PC is much cheaper in the long run than PS4/XBO.
PC has far more games and exclusives than PS4/XBO.
PC has far better games than PS4/XBO (subjective though).
PC has the better services (Steam) than PS$/XBO.
PC's online services are free, unlike PS+ and XBL.
PC's games will look and play better than Console games.
Go custom PC, or choose a different brand than Alienware for a better performance/price ratio.