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The Bechgaard salts and the high T$_c$ cuprates are described by two andthree band models, respectively, with the lowest band (nearly) half filled. Inorganics the interactions are small, while in cuprates the repulsion $U_d$ onthe Cu site is the largest energy. The Mott AF state is stable in undopedmaterials in both cases. In the metallic phase of cuprates the $U_d\to\infty$limit produces a moderate effective repulsion. The theories of the coherent SDWand charge-transfer correlations in the metallic phases of organics andcuprates are thus similar. In (undoped) organics those correlations areassociated with commensurate $2k_F$ SDW and $4k_F$ bond or site modes. Thecorresponding modes in metallic cuprates are the incommensurate SDW and inparticular O$_x$/O$_y$ quadrupolar charge transfer with wave vector$2q_{SDW}=q_0+G$. They are enhanced for dopings $x>0$, which bring the Fermilevel close to the van Hove singularity. Strong coupling to the latticeassociates the static incommensurate O$_x$/O$_y$ charge transfer with collinear"nematic" stripes. In contrast to organics, the coherent correlations incuprates compete with local $d_{10}\leftrightarrow d_9$ quantum charge-transferdisorder.

Comparative study of organic metals and high-T$_c$ cuprates