высококлассный(extremely good: "top-notch scientists/lawyers/artists "The state school system offers a top-notch education. "The new conference centre has top-notch facilities. CBED Alexander Demidov)
высокопрофессиональный(extremely good: "top-notch scientists/lawyers/artists. CBED. We need to offer high salaries to attract top-notch staff. CI Alexander Demidov)