hi guys simple question. I have a 2010 15" MBP i7 arrandale with high res glossy screen, 500 gb HDD 7200 rpm. Is it worth while selling it to get the 2011 version? Is it that much more of an upgrade? or would it be more advisable to wait until next year. I use it for general emailing, downloading films and music, small amount of photoshop (CS5). Skype, some low end gaming, photography (documenting, not professional). I do not use it for film or video work but may do in the near future. Also would it be advisable to upgrade to Lion from SL, I do not want to loose the use of my current wireless HP Photosmart B110a which I only purchased in october. Any information would be greatly appreciated.