I am getting a new Macbook Pro retina display with 256GB flash storage. The capacity may be a little bit too tight, but I should be able to manage it. I am considering to get a 128GB SD card as a secondary storage. I'd store files that I do not frequently use in the SD card. It would be less bulky than an external HDD.
I heard that different SD cards can perform very differently with the MBP, so was seeking some advice on which product has the best performance. Does anyone know what models of SD cards have the best read/write speed when used with a Macbook Pro (with or without retina)?