I have had it for a few days now so im starting to get a good idea whats working and not.
Closing the lid is fine.
I let it run out of power last night and when i powered it up this morning it booted rather than waking up.
If i leave it with the lid open it will not go to sleep, screen will turn off but looking at the sleep light its still wide awake.
Aha. That sounds very familiar. I had what sounds like exactly the same symptoms, BEFORE INSTALLING A SSD. The short version of the story is that it required a logic board replacement to make it go away.
Below is the long version:
1. A few months ago, I had this exact same symptoms that you described. I experienced failure to go to sleep, unless I closed the lid. I also experienced failure to hibernate (ie, after letting it run out of power, it would boot, instead of waking from hibernation).
2. I THINK the problem seemed to be somewhat intermittent... or at least, I noticed it intermittently. But after several months I had detected the pattern and began to troubleshoot.
3. I tried resetting the SMC and PRAM, no help.
4. I took it to the Genius Bar. They checked my battery, it was fine. They kept it for testing using one of their system startup disks. They could not replicate the problem when booting from their disks. They concluded it was a software problem.
5. I did some troubleshooting of my own. Logging under the guest account, the "going to sleep" problem went away. Under my own account, I discovered that I could fix the "going to sleep" problem by upgrading Dropbox from v0.9 to v1.020+.
6. However, the hibernation problem remained. But it was still intermittent, maybe half the time. Until one day, as my power ran out, the machine turned off completely, as it had done on prior occasions. But when I tried to plug it back in and wake it, I was unable to. The sleep light began to blink erratically. I was also unable to restart it using a hard reset. I was unable to get it to respond at all.
7. Strangely, it also failed to charge for at least an hour.
8. An hour later, the battery began to take a charge, and inexplicably, I was able to reboot it.
9. I took it back to the Genius Bar, showed them a video of the odd sleep light blinking, and they told me they had never seen it. It was not one of the standard blinking patterns (eg, there is one that indicates a RAM problem, etc.). They agreed that this was sufficient indication that there was a hardware problem.
10. They replaced the logic board, and finally, all of the problems went away.
All of this was in a Macbook Pro 2010 (Model 6,2), essentially a stock configuration, Snow Leopard 10.6.7, stock hard drive, except upgraded with 8GB of OWC RAM. This is the same machine that I have now installed the SSD in.
So, I would be suspicious that perhaps the problem might not reside with the SSD, and possibly the logic board.