Hello all. I have a 2011 17inch macbook pro with 16GB of memory running happily on snow leopard. I'm installing a new hard drive this week and am planning on doing a fresh install of the OS while I'm at it. I was planning on re-installing SL from the disc, but now I'm considering upgrading to Mountain Lion. Would you recommend it? I'm not using SL to run any PPC apps or anything that I must be using SL for, but I also don't think I need any of the ML features like facebook or twitter integration or launch pad (I'm not sure of 99% of the benefits to be honest). I have an Ipad4 and iphone 3gs so perhaps I might see an advantage of using Icloud, but I'm not too sure. Basically, my question is; Will ML have a negative impact on the performance of my macbook over SL? and if so, will the advantages of ML (whatever they may be) be worth it? Thanks.