I use string sets Adamas since I owned Ovation guitars. After many trials, these strings have become and remain my favorite.
Prices vary enormously from one store to another. They are found normally around € 8.
Ovation enjoy an outstanding balance on the different frequencies of the sound spectrum, it is one of their main assets. Adamas strings absolutely respect that and do not favor any frequency. They stabilize virtually immediately after installation and keep the agreement. New, they provide a gloss that I like. Aging is a gradual process; their lifetime is correct.