When visiting Brisbane, how can you work out if you should get a GoCard, or the new SEEQ one?

The last time I was in Brisbane, the standing advice was to get a GoCard to use on Buses / Trains / Ferries, as it was quick to get and the savings over paper tickets quickly made it worth while. You can even get the $5 deposit back at the end of your trip, so there's nothing to lose!

I've noticed that since my last trip, they've introduced a new visitor focused card, the SEEQ card. There seems to be lots of advertising for it, suggesting to visitors that it's the best thing to get, but without a lot to explain why.

Is there any easy way to decide if, as a visitor, you're best off getting a regular GoCard, or if you should go for a SEEQ one?

(I still have my GoCard from last time, but some people staying here don't have either yet and are unsure of which to opt for)