I would also look at http://testling.com/ http://testling.com/ and https://saucelabs.com/ https://saucelabs.com/. Not sure which is best for this kind of testin

I would also look at http://testling.com/ http://testling.com/ and https://saucelabs.com/ https://saucelabs.com/. Not sure which is best for this kind of testing, but those are two more I'm aware of.