Newbie with a Forester STi

Hello. I am new to the owners club. I have had two Forester STi over the years and have loved them both. My current car is an '06 plate in silver. My son has recently passed his test and has bought a car, so room on the drive has become squeezed. I am looking to sell my Forester...but where's the best place to advertise it? It's had a recent new clutch and has done c. 125K miles. Still pulling like a train, as it has after market air filter, radiator shield and anti-roll bars, plus an after market exhaust (all of which fitted in Japan prior to shipping). Advice gratefully received!