Definitely the linear ex. Unlike the hybrid it is made if hard plastic, so it doesn't discolour over time. I bought the white hybrid and the soft silicone part turned grey within a couple of weeks, from all the dirt it collected
I've asked the company spigen in twitter when will they be releasing the linear ex for iPhone 5.
Although, the linear ex frames for iPhone 5 have turned up on eBay now. Not sure if they are legit, but I am going to purchase some to test em out