heres my situation:
currently I have a 2007 2.4Ghz core 2 duo 4gb ram macbook pro. condition is decent, other than a chip on the top left corner, everything else looks like new. but because i'm an extreme perfectionist, the chip on the top left is annoying me. after having this mac for almost 3-4 years, i have constantly been fixing it and upgraded the interior hd from 320gb to 500gb. but now, the computer is starting to get real slow, vlc player lags (video quality gets pixelated, not because of the movie file), youtube lags, problems occur here and there. the cd drive occasionally rejects blank cds, and i can't create a wireless network. microphone does not work as well (during video chat, people can't hear me properly). also, i am currently on my 3rd OEM battery, but the mac dies at 73% (service battery), so I basically need to keep it constantly plugged in)
so, for this winter, i have around 3k ready to purchase a new macbook pro. i've been constantly doing research for the past few months, and checking the buying guide for mbp news. the mbp im looking to purchase is: 15in core i7 2.8gHz high res antiglare 128gb ssd and 8gb ram.
but after hearing the incoming light peak and usb 3.0, im really starting to hesitate. even the macrumors buying guide says: although apple introduced 2.8, it does not count as an "upgrade", but indicates that an upgrade is not imminent (but at the same time, its under the status: do not buy, updates soon)
so, my question is, should i purchase that mbp? i honestly dont want to regret buying it after a whole new redesigned mbp comes out during the summer, or LP/USB3.0 is introduced. i could purchase the 17 and make use of the expresscard slot for LP/USB3.0, but the 17in is way too bulky! i could really just reinstall my current mbp, and clear everything in the hard drive (it might be a lot faster and newer), but is it worth taking the risk of purchasing a new mac? Is the currently technology improvement speed fast enough that i7 will be "outdated" in 2011/2012? i could also purchase an applecare and hope if the i7 breaks down, they can exchange me for the "updated" version... please help...
i also just read up some information about sandy bridge. just wondering, how early will this new processor be implemented? surely, it will go to pcs first for "testing" and then apple will throw it in their mbps, but is there THAT big of a speed bump to core i7?