Must have SSL Cert Providers? [closed]

We've used Digicert for a couple of years and have been happy with their support folks. They do use a chained cert which has caused some problems for mobile browsers (the iPhone works well but not Blackberry). We've never heard complaints from desktop users.

The instructions on their site are clear and easy to use and their pricing is competitive. I believe they have a 30 day trial so that would probably be your best way to experiment with them.

I think you can look at this related question

For cheapness I suggest the one pointed out in one comment (namecheap.com), about 10$/yr and quite good support on every modern browser. No cert chains involved.

EDIT:

we are also using since 4 year rapidSSL for a GEOTrust wildcard certificate, never had an issue with any OS or browser with this CA.