top of the range

Từ điển Oxford Advanced Learner 8th

ˌtop of the ˈrange f48 [top of the range] BrE NAmE (BrE) (NAmE ˌtop of the ˈline) adjective usually before noun
used to describe the most expensive of a group of similar products
•Our equipment is top of the range.
•our top-of-the-range model