I'm not sure if I will get the Samsung Galaxy S6 because "from what I've heard" is that there will be no micro SD Card slot or a removable battery which is a selling point for me on a phone.I'm still rocking a Galaxy Nexus, although it has gotten painfully slow lately, and not even a factory reset helps. I've had it for over 3 years now so can't say I haven't gotten good use out of it.
Anyway, I'm going to have to upgrade soon, probably going to get the S6 next month.
the best