So just like everyone in here, i also deeply researched the configuration review of i5 vs i7 before finally taking the plunge and getting an i5. Observations and experience so far: 1. I got this machine on Thursday: june 27th = it runs like a breeze - is very fast and everything (word/excel/any browser (mozilla,safari,chrome), iphoto .. will download adobe cs6 soon...opens blazing fast But as i was playing an HD movie on Netflix for 30 mins ..it does get warm ..not explosive warm.. i would say...and not a leg burn warm either..but it gets warm (have not noticed it getting too hot till now) 2. Battery has been a dicy game so far...especially the estimates, i have seen it as high as 10 hours on full charge at 100% and i think and as low as 2 hours remaining at 30% charge...i agree it depends on what you are doing at that time...but still... I have gone through 1 full charge and dead cycle (1 battery refresh) and will go through another one as i do more testing.. Right now it is at 44% and says 3 hours remaining 3. I have downloaded skype/yahoo messenger/vlc/flash/safari plugins/dropbox/evernote/total finder/xtrafinder/thunderbird....still have not configured any emails etc....so i don't know what;s eating the memory....advise please ? My expectations are it should LAST ATLEAST 9 hours with multiple browsing, word processing, some video (say 2 hours youtube/flash/ etc) and applications running like the one's mentioned in #3 above.... Please share your thoughts on what exactly can i use to monitor the Battery and heat properly...dont want to download smcfan thanks guys...!