Where is one tool holding you back?
Pick a task your current setup repeatedly struggles with. Run the same work in another system and compare the result. A different model is useful when it solves a demonstrated problem, not because your collection looks more complete.
Does the benefit survive the extra effort?
Count the subscription or usage cost, time spent switching, review, and corrections. Keep a second option when the improvement is meaningful and recurring. You do not need several platforms just because someone else uses them.
What happens when you build a system?
Apply the same choice to each part of the work. Different tasks may justify different models, but every extra part has to earn its place. Judge the whole system by the work it helps you finish and the effort it takes to run. Recheck when the task or tools materially change.