So I completed my Siege (and Siege Selects) collecting today with Autobot Impactor and Shackwave both on Discount from Amazon. That brings me to having the entire Siege lineup except for Cybertron Prime, who I have no interest in (way too many Prime variants already). On the Selects side, I only skipped Nightbird as I don't really like the mold and already have the Takara Legends one. Maybe if I find her on steep discount (like $10) I'll bite, but probably not. I got Chromia for that price (and already have the T30 one) and am considering selling her off once she isn't on the shelves retail anymore.
I triple-dipped on the regular release weaponizers, Refractor and Smashdown, what can I say, I like to army build.
So after having them all, I actually think my favorite is Astrotrain. I really love all 3 modes, even with the back end of the shuttle looking like someone blew the shuttle bay doors off. The rest of shuttle mode is excellent, and when you fully arm him up, you obscure the back end anyway. Robot mode is great, he is armed to the teeth like, like T30 Roadbuster armed. In fact, he will probably be facing off against Roadbuster quote often. The only flaw for robot mode isn't even on the bot himself but the silly idea of using the rest of the tender as a terrible backpack. Instead I leave the platform shoes on the tender and use it as a sort of skate board, a really slow, treaded skateboard that can pretty much plow through anything.
But the best mode of all to me is the train mode with the tender. It doesn't bother me that there are treads on top of the tender, this train don't run on coal anyway. The only flaw I have with this mode is the very front end and it really is just a nit-pick. With how narrow it is compared to the rest, it was ridiculous to put wheels there. The train would actually need 4 rails on the track then with 2 different wheel spacings. But much like the train doesn't run on coal, it doesn't run on tracks either, so it really is just a nit-pick to me.
So there you have it, Astrotrain has dethroned voyager Prime as my favorite of the line.