SSL certificate

I'm just curious on what type of SSL Certificates hosters use on their servers for software and security?
Mabye list some pro's and con's of some?

I don't know much about SSL certificates, but in general there are no pros and cons. You just get one - from a respected company of course - just to convience your users that they are on a secure environment :)

Which companies are good for that?
Can you recommend any?

I believe you should go for a well known SSL certificate, not because it is better than others, but because clients are familiar to them and by seeing their certificates they tend to trust you more.

Such companies - in my opinion - are Verisign, comodo and thawte.

Verisign is usually the msot reliable - but expensive.

Have seen relatively cheap SSL certificate that ahosting.biz offers to their clients.
I think $29.99 per year isn't much. I just compare this price with the others and draw such a conclusion.

GEOtrust all the way - cheap, reliable, and easy to install!

Thanks for your replies, guys, you know I was advised to use SSL certificate from globaltap.com.
What do you know about this company? Has anybody used them? 

This company does not look like an SSL vendor. I think they are resellers or something.

Nikolas, what company are you talking about?

I am talking about globaltap.com

Overall globaltap.com seems nice for me. The company has the reputation of reliable and stable.
Many positive reviews I have read about them.   

I once bought a SSL from GoDaddy and DigiCert, but I GlobalTap is also a good company.

Fro getting a good SSL cert santrex.net is recommended. They have offers starting for 20 dollars, and with different levels opf security encryption and protection of different types.