I already have a Z4 on my laptop, I want to be honest with you guys. I think P3 is way much better than Z4. Z4 is not really good and not what I expected.
P3 has more features than Z4.
but one thing, one of my installer/trainer from Sorenson told me that they will release some software from Sorenson so I expected a exciting features with Sorenson software. I can't wait for this.
As for Sprint, I download but it comes with Z4, how sad is that.