I'm going to bet on Chennai Super Kings they've beaten Rajasthan Royal by a huge margin last time they met. I don't know if home advantage is a huge factor in this game but the Kings haven't lost twice in a row and if they win this they'll be close to qualifying for the playoffs.
For sportsbook recommandations I use
sportsbet(kyc) and
nitrogensports(no kyc) if you want to use a betting exchange
fairlay is one good site.