Well i just switched from the Evo 3D on Sprint and yes it is worth the jump. I've played with the gs2 and it's very nice, but for me it was a welcome upgrade. I really like HTC phones and Sense. The biggest reason for me switching was being able to use 4G and the fact that Sprint doesn't have that in my area and wont get LTE here anytime soon, what's the point in getting something that i cant take full advantage of. It's like getting a Porshe and driving it only thru a school zone. But overall, the One S is a GREAT phone. I think you'll have a lot of fun with it.