I'm a very happy JaguarPC customer. Their most basic package (for cPanel) gives you 15GB diskspace, 300 GB bandwidth per month (or 2mbps capped unlimited bandwidth), 256 MB guaranteed RAM, 1024 MB burstable RAM, cPanel and full root access. The monthly price is $46.97 per month.
$46.97 = $39.97 (for the VPS) + $7 (for cPanel)
They also have lighter packages (for $19.97 per month), but these don't have cPanel. For cPanel, you really need the 256 MB guaranteed RAM, I'm afraid.
Other than their servers, JaguarPC has real good support. I don't want anything else
For more info:
http://www.jaguarpc.com/vps-hosting/