I've had sprint PCS for eight years and LD service even before that, regardless, they are a brand which will go away within 24 months. Remember that Verizon, AT&T, and Google who won the latest spectum that the FCC put up for bid. While announced last week, they had to take th highest bidders.
Meanwhile Sprint has rarely failed an outgoing call from me and generally has the best coverage during a sporting event. But I am a bigger texter than caller/