I'm considering a new Mac purchase and would like to hear from other board members to gather some more opinions and from those who can point out some things i might not have thought of. Any purchase is not immediate and I know the drill, I would wait for the Haswell line of processors to be released on new Mac products. First of all I own and use a late 2008 aluminium unibody Macbook. It is a truly brilliant machine, i love it. I think the design looks beautiful and the build quality is flawless. I have owned it nearly five years and I have kept it in great condition and it is barely scratched. In that time it has not gone wrong. The worst thing that has happened is the battery does not last very long now and this restricts the use of it as a mobile device. I have replaced the battery and even this second battery now last about 1 hour 40 minutes when browsing the web and using Word which is what I send the majority of my time doing on this machine as i'm a researcher. If I was to watch a dvd or use handbrake then i'm definitely getting less probably about 1 hour 15 minutes which is not enough to watch a movie or burn a dvd meaning I need a power cord to be able to do these things. Overtime i have upgraded from 2GB (two 1GB SO-DIMMs) of 1066MHz DDR3 SDRAM to 4GB and now i have the maximum for this machine 8GB (two 4GB sticks from Crucial). I have also upgraded the 250GB 5400-rpm Serial ATA hard disk drive which came with my macbook to a Crucial 256GB SSD. I feel i would never want to go back to a HDD. For any new machine how much of an upgrade am I going to feel? I already have the 8GB of RAM and a 256 SSD installed. However, my macbook 2008 has a 2.4GHz Intel Core 2 Duo processor. Any replacement is going to have a Haswell processor. My macbook 2008 has NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main memory. I imagine regardless of which Mac i get as a replacement the graphics are going to be significantly better. I should say I do not game at all so this is not an important factor to me. I notice that on Apple's newer Macs the ability to upgrade the machines oneself is not possible due to the new engineering design. I understand this is down to how tightly everything is packaged together but it seems to also mean that Apple would like people to buy a new Mac more often in order to get newer technology since one can't upgrade. I am currently burning all my DVDs to my external hard-drives for storage and apart from using Handbrake to do this I very rarely use the optical disc drive. I made the decision (like many others) several years ago to move away from physical media. I'm creating a lot of space by selling my entire DVD and CD libraries. The Mac computers I am interested in all have had their optical drive removed as they've been remodelled. I am looking forward to carrying around a lighter Mac. One thing I wish my current Macbook would do is to hook up to a large screen TV, as far as I know this 2008 model does not allow it to HDMI. Please correct me if i'm wrong. The display with this model is 1280 by 800 (native). I know the Retina display is a big draw on the Macbook Pro now and from my own speculation i don't think the Air gets the Retina display until 2014 when the Air will likely get a redesign. I guess displays have moved on considerably since 2008 too. I am currently running OS X 10.8.3 and I've installed all the Big Cat upgrades since getting this Mac. When 10.9 gets released I will install that too. Yet there will be a time when Apple deems my hardware not powerful enough to power their new OS and at that point i'll have no choice but to upgrade. At what point is that likely? 10.10+? I guess it comes down to Want versus Need, does it not? I still love using this Macbook from 2008 and i've been blessed with a sturdy machine which never goes wrong. But at some point something will go wrong and it will likely not be worth getting it fixed because of its age and cost of replacing. In short I would like a Mac which is lighter than what I have now. I am very keen for my new Mac to have a far better battery life in order to make it a truly mobile machine which will allow me to work most of the day without being hooked up to a mains power source. The build quality is important and I would want it to last at least as long as i've had this one which is about 5 years. Any suggestions? Including to stick with what i've got until I truly need to replace. Also let me know how much of an improvement in performance i'm going to feel considering I already have 8GB of RAM and a SSD installed. Thank you.