From Longman Dictionary of Contemporary Englishtop-flightˌtop-ˈflight adjective [only before noun] BESTvery successful or skilful They’ve hired a really top-flight sales team.
Examples from the Corpus
top-flight• top-flight attorneys• His office says he has kept at least 20 top-flight journalists and analysts cooling their heels waiting to interview him since October.• Kile is among a handful of top-flight pitchers headed toward free agency.• But even the most cynical agree that good fortune is the mark of every top-flight politician.• Dave Libbey, another top-flight ref, has been conspicuously absent since his return from an early season injury.• Liz sees the profit in investing two days' selection time to hire a top-flight sales person. 