Which solar neutrino experiment after KamLAND and Borexino?

We estimate how well we will know the parameters of solar neutrinooscillations after KamLAND and Borexino. The expected error on Delta m^2 is fewper-mille in the VO and QVO regions, few per-cent in the LMA region, and around10% in the LOW region. The expected error on sin^2 2theta is around 5%. KamLANDand Borexino will tell unambiguously which specific new measurement, dedicatedto pp solar neutrinos, is able to contribute to the determination of theta andperhaps of Delta m^2. The present data suggest as more likely outcomes: nomeasurement, or the total pp rate, or its day/night variation.Comment: 12 pages, 4 figures. v2: comments and references added, final versio