Recently, someone on this forum complained that Malteasers didn't taste right compared to Whoppers. I always thought they were the same, so I took a pack of Malteasers with me to the states and did some research.
A rare meeting of two great candies:

Here's a side by side comparison, the only problem is that the packet of Malteasers had been in the bottom of my backpack for a week in 100 degree heat. That's why they look like they've got leprosy.

You can plainly see that Whoppers are much darker in colour and seem to have more smooth glaze.
Results from the taste test were conclusive: Whoppers had a much stronger, maltier taste and the chocolate was higher quality. Malteasers had a single strong sugary taste with little complexity.
Whoppers for the win!