If you are concerned for speed, you want to go with one of the "big boys" to get a cert that is closer to the root the browser trusts. The more intermediate cer

If you are concerned for speed, you want to go with one of the "big boys" to get a cert that is closer to the root the browser trusts. The more intermediate certificates you have to supply, the more the client has to download to complete hand-shake, and you should strive to keep it under 4k to avoid overflowing the initial TCP window (which would then require another round-trip).