I installed the new version of V4 last night, but still nothing heard with V4. Yesterday I received only RTTY stations in the V4 segment. I wonder if V4 will beat JT65A. I think JT65A is the best mode for QRP or low power. It is possible to make a QSO with WSPR, but then you must use WSJT7. Use the dial frequency as JT65A and you can make a JT65A like QSO. I know the exchangeable information is restricted, but it is a QSO. Making a sked is necessary.
My spots in 14 minutes JT65A, 12 DXCC in 14 minutes, I think it beats WSPR.