I recently activated my Nexus 5 on Sprint just because I can. Here in the Raleigh, NC area, the LTE is good and strong in my house but when I'm out, I seem to be on 3G way more than LTE. I'm not sure if this is related to the eCSFB issue with legacy towers or if it's just that 1900 MHz covers like crap, but either way, this is going to get old really quick! I'm driving to NYC in two weeks so I'll be interested to see how coverage is up and down the I-95 corridor and I'm interested to try Spark while I'm there.