hello, in my personal opinion, I think texan holdem is the base to master all the variants of poker, it allows you to know the hands that most favor you, how to play with the position, how to do bluff and each and every one of the details that for example in Omaha would be difficult to digest for the great variance that there is in each time a letter falls to the table.Omaha is more dispersive in my opinion. Try both and choose what you like best.