If you want to bank the most money in hi/lo hand selection is crazy important. You don't 'get to see more flops' in hi/lo IMO. Holdem can become boring, which can lead to mistakes. Then there is the hi/lo agrument that you get to see more flops. Holdem makes you play the player, making it more of read the person challenge. For me, Omaha plays more to the cards and math.
4 cards gives me a much better picture than 2. So far I am the lone voters that says Holdem is harder than Omaha.