I like both Prowl and Thundercracker for different reasons, but I especially like Thundercracker because IDW is now finally, after almost 30 years, portraying Thundercracker in a manner that is accurate to his original 1984 bio! It ends a nearly 3 decade long drought where Thundercracker had so much potential to be an interesting character (as a morally conflicted Decepticon), but it had just never been exploited by TF writers before. I made a joke about this once in a photocomic that I made 10 years ago.

I like Prowl too. It's pretty cool to have morally dubious Autobots like him and Whirl in the story, but let's face it, IDW Prowl is nothing like how G1 Prowl was originally described in his G1 bio. IMO it's easy to take a character, effectively disregard its original specs, and then scratch-make a new character out of it; but it's more challenging and satisfying to see a cool character created from being faithful to the source material. Or when writers switch bios around, like how IDW Swerve's persona is arguably more similar to G1 Hubcap than G1 Swerve (although IDW Swerve isn't quite as deceitful as Hubcap, and he can be unfocused like G1 Swerve ).