Is the Garmin Forerunner 165 or 255 better for a first 'real' running watch?

Mainstream and specialist reviewers split here. The 165 wins on screen (AMOLED), weight, and price, and is widely framed as the easiest Garmin to recommend to new runners. The 255 wins on triathlon/multisport support, multi-band GPS, and more advanced training metrics like race predictor and training readiness. If you only run, most reviewers lean 165. If you swim or bike too, they lean 255.