WAF of ST2 Out the window ... Wink on the way for parallel testing

Lots of systems out there, each with pluses and minuses. Honestly it just comes down to your specific situation.

Which devices do you want to use, which specific features do you want (I want voice control, for example), what’s your level in technical expertise, how much time are you willing to spend each week working on the system, how much reliability do you need, do you want to be able to do custom code even if all your other requirements are met.

Detailed discussion of various options here: