We are planning on getting the iMac 27" i7 with 8 gig of ram. We have a lot of HD DV tapes that we would like to put on to DVD to share with family and were wondering if iMovie would work or if we should upgrade to Final Cut Express 4. With all the talk about Apple upgrading the iMacs, should we wait or should we go ahead purchase. We heard they might be upgrading the graphics on the iMac. Any help would be greatly appreciated. Thanks!