Hi, what do you mean by altcoin campaign, signature campaign? I am sorry I am quite confused and curious what altcoin campaigns are and it might be another good opportunity.
Those surely are a better opportunity than bitcoin paying signature campaigns. In altcoin campaigns, you get paid a portion of the total supply of the coin. So your earnings are depending on how much money they collected during the crowdsale. Recently, ICOs are having very good results. Although it will take a long time before we can actually see their "success" (since most ICOs have visions that takes years). But with an altcoin campaign, you can just dump your rewards right away and get the money right away.
They pay better based on how much I've made on vDice Twitter campaign. I'm thinking of joining frequently on these bounty campaigns. Not only it allows you to have an altcoin to trade for free, it's also a good campaign to have along with bitcoin signature campaign. But they also have signature campaigns in case you want to join that too.