Are attachment-capable trimmers worth the extra cost?

Reviewers who own ECHO's PAS system and Husqvarna's attachment-capable models say the tool-less couplers make swapping edgers, pole saws, and brush cutters genuinely convenient, letting one powerhead replace several tools. The caveat from r/lawnmowers is that detachable multi-tool systems from some brands have a worse reliability record, so buying into a proven coupler ecosystem matters.