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Author Message   Entrepreneur Pilla Bewarse Username: Entrepreneur Post Number: 997 Registered: 05-2011 Posted From: 24.130.197.214 Rating: N/A Votes: 0 Posted on Thursday, October 03, 2013 - 11:42 pm:    sharp 4k - not of much use..retina is good enough even for pro photographers/cinematographers/graphic designers...you are into trading..so does not matter IMO Mac Air 13 is a good size - main thing 12 hours battery life awesome..you dont need to thing hook to power.. Mac Book Pro more performance then Mac Air...if you need high performance for your trading platforms..I would prefer Pro..