Crossbrowsertesting or Browserstack.com? What to choose for frontend testing?

Question

Software testing

Good day everyone!
Tell me, who worked with these services, which one uses real devices? Which one is better to use, you need to choose something for testing, maybe someone knows the same quality service, but cheaper?)))
Thank you in advance for your answers.
I also ask those who use https://saucelabs.com to respond , what are your impressions? According to the video, it seems to be a very good service, but I wanted to try the trial, but the tests do not start, writes something like all the virtual machines are busy (

Answer 1

I use browserstack, uses real devices
The first one I did not use.