Helpdesk software: Kayako vs Deskpro

[محروم.كوم]

Some years ago I researched which helpdesk software was best for my site. At that time Kayako came out best. But since then Deskpro has come a long way. The price is somewhat comparable. Even though deskpro costs twice as much as kayako, kayako charges for its addons.

Both have integration. Kayako has a login share. Deskpro has integration as well, but I can't find to what extent.

Here are the url's:
http://www.kayako.com/solutions/supportsuite/
http://www.deskpro.com/features


If you have experience with these support ticket systems, then please let me know your opinion and why you think one or the other is best.
If you only have experience with one application, then please note this in your post. __DEFINE_LIKE_SHARE__