i personally agree about fadora... i will never use it in a business systems... i don't use it at all... i personally say use debian or my preference ubuntu lts as a server os. if you need a rpm based system go with centos unless you want to pay for red hat...

Companies dont mind paying for SLES or RHEL if thier business depends on it. They can save loads of money compared to microsoft licencing and be safe with the thaught that if something goes wrong, they wont lose too much money due to downtime as they have support