Hi everybody. I'm new(ish) to video editing and VERY new to Macs, so please be gentle Okay, so I have been playing with editing video with FCP on my mum's MacBook Pro, which is the bottom of the range, 13", 2.26 GHz, 2G RAM model (about 3 months old). Amazingly, it performs about as well as premiere on my quad-core, 4G RAM PC desktop machine. I was seriously impressed, and thinking "wow, Mac's are amazing!". Then I started to get greedy, as you do, and have just borrowed my brother's new 27" i7, 8G RAM iMac. I thought, if mum's laptop could be as good as my PC desktop, then this thing should totally rip! ... long story short, it doesn't. In fact, it doesn't seem to perform any better than the 13" MBP (other than having plenty more screen real estate of course)!!? Both of them play and edit XDCAM XE compressed 1080p25 footage fine. Both of them skip and jump on H.264 compressed 1080p60 footage. They both seem to require rendering on the same effects and so-on. There hasn't really been a single noticeable workflow improvement from using the big beast! Am I doing something wrong? I'm not an expert by any means, but I've ensured the sequences are set to the appropriate setting for the footage, which is about all I know I should check. Anything else I should look at? Thanks everyone. Col.