You spread too thin. Any of those topic can easily goes to 1.5 to 2 hours. 5 ^5 D' s! D* [$ _" ?! W: S! Y0 DThose PM who understand what you talking about, do not interested, because there is no comparation on varieties. 1 U- r. \1 L+ ^) }Those Arch or Dev who have hand on, do not interested in the 10 minute shallow introductions.