id say maybe horse and rider mag or horse mag as these are mags where most the horses for sale are non professional (with out causing offence) what I mean is H&H is mainly horses with alot of points or experiance but if your just selling a project or riding horse in a sence then these mags may be better.
i sold a difficult mare through there (a riding pony who was ruined by an awful child!!) now happy and working well for a small lady owner - needed lots of TLC (the lady put her in foal and had a year off!!)