What are the advantages or disadvantages of a forward swept wing vehicle over a rear swept wing

Forward swept wings and rear swept wings use the same principle but use completely opposite methods to delay the surge, thus making the aircraft better and faster into supersonic speed, so the forward swept wings can completely realize supersonic cruise, but forward swept wings of the airflow separation in the wingtip, the rear swept wing is in the root of the wing, so the front swept wing wing is easy to break under the large speed, the best solution is to use composite wings, the Russian s-37 or Su-47 technology demonstration aircraft basically solved this problem, and use the duck wing to solve the problem of lift leveling to improve maneuverability, but the duck wing with the Su-47 technology demonstrator to solve the problem. 37 that is, the Su-47 technology demonstration aircraft basically solved this problem, and the use of duck wings to solve the problem of lift leveling, improve maneuverability, but the combination of duck wings and forward swept wings stealth performance is too poor, so the four generation of aircraft is unlikely to use forward swept wings