I don't know what is good landed tournament to play. But if you are looking for online tournaments then I can give you few suggestions / advices.
The popular poker tournament I would say is definitely pokerstar because it has the largest poker communities and it has comprehensive poker games and systems for players to enjoy.
If you are looking for tournament in other countries such as Malaysia and Singapore. Then I suggest you can checkout local online casino such as god56, acewin or me88. These are the common casino that conduct poker tournament from time to time. Among these, I would say me88 is the best place for me since it has better payout rate compare to other tournament in local casino.
If you are looking for landed casino poker tournament. Then I suggest you to visit Genting in Malaysia or Singapore. They have excellent and comfort environment to play!
In the end, it depend on what you prioritize for....payout rates? environment? safety?