I currently have a late 2006 white iMac with lion installed. I use it for normal things (internet, email, music, etc) as well as photo editing and video editing. As with any piece of technology, time has passed and my computer is showing its age. I also happen to manage other peoples iMac via ichat with screen sharing and often have to wait for my computer to catch up so that I can see that I have done on their end. Long story short is I'm looking to upgrade to the new 2011 iMac and was wondering what kind of difference would i experience? Is it night and day or just a little bit faster. Pretty much if its going to be worth the upgrade. Since i don't do anything hardcore (HD video editing, etc) I'm just looking at an i5 2.5 Ghz 21.5" model. Any input from someone that was in a similar situation would be appreciated.