Is there a difference between 15in model 2.2 ghz and 2.4ghz? Also NVIDIA GeForce 8600M GT with 128MB of GDDR3 SDRAM and NVIDIA GeForce 8600M GT with 256MB of GDDR3 SDRAM? Also 1440 x 900 pixels or 1920 x 1200 resolution? probably dont need 17in sreen will use lcd. What one is better Glossy or antiglare? pros and cons? I dont hardore game or anything.. just music production and video editing and creative-photography.