When your client has BrowserStack 😫

When I first saw this I thought I saw some Browserstack ad 😅

A browser inside a browser? Wow BrowserStack is amazing! Whoever came up with this idea, take a bow 🙌

Edge cases are the best, some physical IPhone has an issue on the site. Browserstack simulation tells me everything works just splendid.
FML.

I am starting a testing project at work and we have nothing in place.

Should I use a tool like browserstack and try to hold my selenium tests there or bite the bullet and use something like spec flow to write the selenium tests by hand? The advantage being full control, easy way to integrate with CI and easier to integrate to existing workflows (no need for visual studio and a browser open to work on in parallel).

If I do that I will also need some way to do cross browser testing which I guess will require me to export the tests somehow to a cross browser treating service like browserstack.

Who here writes their own selenium tests??Is it worth writing them yourself or better to use browserstack?

I know it's an age old question, but how does everyone do their cross browser testing? Im looking for a way to automate this (ie. Browserstack)