What's more profitable, Two Cities or Expert MVM?

[Londinium]

I always thought it was Two Cities, considering you could get australiums and other loot through it. It was only until just recently I discovered Expert MVM gives not only botkillers, but aussies too.

Now I'm left wondering if I should switch to Expert instead, I hear it's way faster than Two Cities, but I also know botkillers go for pennies on the market, so I'm still under the assumption Two Cities is more profitable (I also just really want an aussie).

So should I stay on Two Cities or make the switch?