I know Dreamcast has VGA support (480p progressive it looks like) but what's the best option for an SD CRT tv (a nice 36 inch Trinitron) with component input (480i)?

Would it make sense to use an RGB Scart cable with the common scart to component box to get an rgb 480i/240p signal? Or would scart rgb be stuck on progressive (not compatible with my tv)?
Am I better off just using S-Video?