Personaly I am using the MSI just released 1.5. The 1.6beta is for 'Barcolina' CPU's. We have Henka, Denab CPU's, Barcolena...?, Opterions?, CPU's upcomming for release? Don't know. The first few Beta releases have the benefit of removing issues found, after that it is 'Special' needs. Heck, 1.0 works, 1.5 seem better. To change Bios because it's available would be considered foolish to do with a working Bios, with no special needs or issues. So why put a system at risk for unneeded Bios updates. We might not see any more new Bios's from MSI until a need arises from needs, ie: new released CPU's or other option changes. Which is the best one? The sanctioned released Bios editions from MSI themselves. That's the stable ones, and your needs are...?