the only problem I have with a hasbro TF that I dont have with the takara version is armada prime's gold paint. he's never been "played" with, yet the paint has turned a dull brown color, and is flaking off.
I have the Jungle Robot set and the Dino Robot set. I honestly thought I was buying bootlegs at the time since the packaging was so odd and the price was so low. When they got to my house and I examined the figures first hand, I was shocked to see they were the real deal. I also have the Korean Big Convoy. All of these Korean figs are as good as any TF you'll ever get.
I bought one of the Megastorm figures from that line and it was great. I used it on a custom and bought that version because it was cheap on ebay. The only real differences you might find are the electronics (megastorm didn't have any) and the stickers are different. Overall I like these a lot. I'm also thinking of picking up a Big Convoy. I would like the Gigatron and Leo Convoy eventually from this line.
Sorry for the old pics Here's the rollers out of package. The only pics I have of them besides boxpics. Even though they have no legs really, they're still really fun toys. Big Convoy compared w 20th Ann Prime A recommended set, Break & Dead End