Hi guys, I have been using my top end MacBook Air 13.3" for three years. I used Thunderbolt Display for a short while. Then I sold TDB. I am using my computer for blogging, translation and surfing on the Net. I visit Apple Store and take a glance at 12" retina MacBook. I love its design just because I have used 12" laptops for 10 years. By taking into consideration of my using habit, do you advise me to change my MacBook Air wit retina MacBook? I'm curious about rMB's 1.3GHz processor's speed. My MacBook Air has 1.7GHz processor. Thanks in advance for your responses.