I prefer individual, with the caveat they come out. I can imagine buying three of the five because the final two didn't make it would be annoying.

Here in Japan, I really wanted Sky Lynx and Roller, but didn't care about the rest. I didn't want to fork out the big bucks for the set just for those two. Also, I really wanted to play with one of the small aerialbots, but again, didn't like superion enough to want the set. As a result I didn't experience the mould until Blackwing/TheOtherguy came out. Turns out I like that mould.

In a way, TT's distribution is nice. They released all the Terrorcons at the same time, so you can grab them all at once. However, the Dinobots were slpit up. But at least with TT, they provide dates when things are in shops and it's pretty reliable.

Hasbro's enslavement to the retailers messes up that and that would annoy me greatly.