Remote ECU tuning vs dyno tuning - which is better for BMW?

Ive done both remote tuning and dyno tuning on different BMWs and wanted to share my comparison. Remote tuning: - You read the ECU file at home with an OBD tool - Send the file to the tuner via email - They modify it and send it back - You flash the modified file - Cost: 300-500 EUR typically - Pros: convenient, no need to visit a workshop, can be done anywhere - Cons: no real-time adjustment, tuner cant hear/feel the car Dyno tuning: - You bring the car to a workshop with a dynamometer - The tuner makes changes and tests in real-time - Multiple pulls to optimize every parameter - Cost: 500-800 EUR typically - Pros: real-time optimization, tuner can verify results immediately - Cons: need to travel to the workshop, takes half a day My experience: for stage 1 on modern BMW engines (B47, B48, B58), remote tuning is perfectly fine. These engines are well-understood and a good remote tuner knows exactly what parameters to change. The results are within 5% of a dyno tune. For stage 2+ with hardware modifications, dyno tuning is better because the tuner needs to account for your specific hardware combination. What has been your experience?