I'm using AWS EC2 C4-XLarge (Qty=2) for solo-mining and have gotten 3 blocks in the last 12 hours, however, when I started, the nethash was only 75 Kh/s, now it's 250 Kh/s. I'm thinking of deploying 2 more, it's kinda fun to get blocks ~175 wownero's all yours in the wallet