Excited to have my 200 mW WSPR signals picked up last weekend all the way on Hawaii! I was one of three Dutch stations to be heard by AI6VN/KH6 on 30m on the island of Maui that day. The other two Dutch stations were using 5 Watts. Hawaii is my 71st WSPR DXCC at 200 mW (see the complete list here).
I used my QRP Labs U3S transmitter and a homebrew indoor magnetic loop antenna (see also the blog entry here).