If something goes wrong after the warranty is up, hardly anything is replaceable. Potentially worrisome for getting 5 years of use out of it. I am currently on the fence due to this.
The only things that are easily replaceable in the old shape are the RAM and HDD so it's not really a huge difference. It's not like you could easily replace your CPU, GPU or motherboard on the old model. With AppleCare I have piece of mind for 3 years and I will probably replace the computer in two years anyway, if something compelling comes along.