Please send us your suggestions for USA and help others to get a reasonable SIM-card for their next trip!
Most US network operators don't use the internationally common GSM-Standard (with SIM-cards) but CDMA instead. Therefore we just list GSM-networks here which can be easily used with international phones.
AT&T has the best nationwide coverage in all frequency bands. T-Mobile US focuses on bigger cities but often offers better prices.
International offers and reseller with international shipping: