We're about to release a service that requires website owners to embed our javascript code on their site which will then serve the script from our server similar to Google Analytics. (yes I'm aware of the security implications)
We obviously need SSL for this because it'll be embedded on SSL enabled websites so I'm looking for the SSL certificate authority with the best possible browser compatibility. I'm wondering if any research has been conducted on this subject that has real data to backup the claims. I hear a lot of people saying its very similar between the big players but I've never seen the data to back it up especially in our case where 0.01% comparability difference is a big deal.