Unfortunately, ssl is a game where bad CAs ruin it for everyone, not just their customers: It does not matter for an attacker where they got a bogus certificate as long as it is considered valid, and there's little you can do to protect against it, certainly not by paying more or spending more effort on validation of your own cert. ("EV" (which is what the CAs really should have been doing all this time) and cert pinning comes to mind)
There are minor differences between providers (like a Godaddy wildcard for .company.com also including company.com as a secondary entry while RapidSSL wildcard does .company.com only and will give a warning if used for http://company.com) but I've never know a user to care unless a certificate warning pops up.
Also we believe in friendly support and no hidden costs or tricks :)