I have mostly travel sites, originally only monetised with adsense. During 2008 I managed to change to about 50% affiliate income, 50% adsense but I'm not sure how much further to 'demote' the adsense for 2009.

In principle affiliates should always do better, but many of the 'major' travel sites have adsense.

Does anyone else have any thoughts or experience of how affiliates and adsense compare on travel sites?