April showers might bring May flowers, but the only precipitation we really care for around here is that of flagship handsets into stores. In that case, it's time to break out the raincoats: the HTC One is officially on sale at AT&T and Sprint as of today. Both carriers and their resellers are offering the aluminum wunderkind in its silver guise at $200 on contract for a 32GB model, with AT&T still holding the US exclusive on a $300 64GB version. Those jonesing for different hues or radios will have to wait a little while longer, however. The T-Mobile edition won't officially land until the 24th, and a black 32GB model is still "weeks" away from landing at AT&T and Sprint. Provided you're not the exception to the rule, though, you're cleared to buy what's arguably the first US-bound flagship of the year.