Movie Energon Repaints - Advice Please

Good day all,
I've been seeing pre-orders of "Energon repaint"s such as Arcee and Signal Flare.
As someone new to buying TF toys, can anyone give me their take on the Energon line, what they're about, why they're good enough to have a movie repaint, and I guess the bottom line, why I might want to buy them.
By the way, I've checked the other post, and don't seem to find what I'm looking for.
http://www.seibertron.com/forums/viewto ... art=0&sid=
Thanks!
I've been seeing pre-orders of "Energon repaint"s such as Arcee and Signal Flare.
As someone new to buying TF toys, can anyone give me their take on the Energon line, what they're about, why they're good enough to have a movie repaint, and I guess the bottom line, why I might want to buy them.
By the way, I've checked the other post, and don't seem to find what I'm looking for.
http://www.seibertron.com/forums/viewto ... art=0&sid=
Thanks!