It’s hard to say which type of secateurs is better since they are used for different tasks. Bypass secateurs are generally utilised for gentle work when you honestly care about damaging the plant as little as possible. On the other hand, anvil secateurs generate power due to wide cutting-width that most definitely requires less force for a perfectly executed cut. Hence, both models are efficient in the tasks they are intended for, so you should have both models in your toolbox.