I have used it for a while and found it pretty reliable: 2.9cents/Min. for domestic LD, (3.9cents/Min. if you use their 800#), pretty good phone quality, manage your acct (everything including recharge your CC & view your billing) on-line, 75cents/Monthly Fee only, besides no connection fee, no any hidden fee, accurate time-calculation...
good prepaid calling card site
good prepaid calling card site