Me on the other hand have had mixed results and so far stick with planted tank for Oscar.
Since most tropical plants are way cheap down here, I can try them without loosing much at all.
So far this is my experience with one specific pair of Oscars (others may and some will behave way differently) who share their tank with a pair of Green+Gold Severums, two pairs of Convicts, and three Kenyi, in a deep natural river sand substrate (no fertilizers added), and barely 2x20W standard fluorescent lights placed on top of bronze-coloured 3/16" thick glass covering a surface of 72"Lx18"W and a depth of 26":
Swords: Total failure. Destroyed, uprooted.
Anubias barteri: untouched, but leaves got way dirty, will try again when I upgrade my substrate to Eco-Complete.
Anbuias Afzelii: Total failure. uprooted.
Anacharis: seem to work but requires more light than the Oscars feel comfortable with, so I took them out. Anacharis bundles with less than needed light will suddenly die and decompose, so better not taking that chance.
Tropical Hornwort: Fairly good, they will uproot some they don't want in certain areas of the tank, but likely leave some areas undisturbed, so I keep this areas as "planted" while let them have some floating bundles. So far so good.
One Unidentified plant: this floating plant that I have not been able to ID yet is doing as good as Hornwort.
Note: The only drawback is constant cleaning of filter intakes as plants' debris float around causing filter clogging if you are not careful, at least for a few weeks, as they "settle" in the tank. Since I enjoy doing tank maintenance this is not a problem at all for me.
Pepe
Santo Domingo
PS: I promise to upload some pics tomorrow or by Sunday.