There is not a general answer to your question that we can all agree upon, odds change all the time due to players getting injured or becoming unavailable somehow and they can also change depending on the demand of users like you and which team they happen to support, so the only way to see which are the best odds for the matches you are interested is to check the odds of each website, however there are sites that already do this so you do not have to check each individual website, saving you time in the process.
Manually checking the odds on various websites may be the best way to go since the odds are subject to change at any given time, and again the ops can bet on more reputable and odds stable sites such as stake with small odds but for good reputation and minimal odds change before or during the match.