Here's my relatively meager collection, started in about 2002 when I got back into Transformers as a result of Armada. As the title says, I focused mostly on Starscream over the last 14 years, but when my wife got into TF via MTMTE, we started accumulating a few of the female TFs, too. Toss in the odd Legends figure and we get the motley that is our collection.
First up are the Leader/Masterpiece-type 'screamers adorning the top of the shelf (that's US Masterpiece V1 transformed on the right there). Below are Strongarm, a Legends OP, Windblade, CW Rodimus, Chromia, Prime Hyperspeed Wheeljack, and Legends (CW) Starscream w/Waspinator, Skywarp, and Thundercracker. The poor-man's seeker collection! Also behind Windblade and Chromia is a still-in-box Alternators Skywarp; I need a good place to display him in car mode.
Up next is likely my favorite version, the G1 kind, with Commemorative Edition Starscream leading the pack on the far left. There's a fair bit of merchandise here, including the multi-part Kreon to the left of the Armada Starscream, imports of the Revoltech, Takara "WFC", Q-Transformer, and Alternity Starscreams, some non-Starscream Kreons atop the Mighty Mugs box, and the plane for Action Master Starscream at the far end. I brought it from my parents' house when I was down there last; sadly, AM Starscream seems to be gone.
Next shelf down is Armada Starscream. There's a bit of merchandise missing which is in storage in Boston, but in the meantime I have most of the domestic releases of the figure. The "Heroes of Cybertron"-styled figure and Voyager-class Cyberton Starscreams are, of course, Takara imports.
On the fourth shelf is my Movie Starscream collection. It may surprise some of you to know that Hasbro really pushed for merchandising for its films. It's true. Anyways, I have MOST of his domestic figures here; I briefly entertained the idea of trying my hand at some of the Takara exclusives, but that one Red Starscream is so garish I decided against it. Among the missing items are various repaints (mostly of the Legends class figures, but I'm also missing some of the ROTF Voyager redecos and one or two of the first Movie mold), along with a few merch items like the Gravity Bots and Activators.. Below are my Animated and Prime collection. Surprisingly, Starscream had very little Animated stuff for me to get; for a while I wanted to get all the clones, but they weren't all released in the same size so screw it. I missed a few key guys in the Prime lineup, especially his Voyager class incarnation and the first Legends one, but otherwise I'm pretty satisfied with it.
Rounding things out is my current crown jewel, the Hasbro V2 Masterpiece figure. I ended up paying probably a bit more than I should have for him, but again, I consider him to be the best figure of the lot so far. Here he is bravely (?) guarding the lightswitch for our electric fireplace. What an asset to the Decepticon cause. Not shown to the left are a bunch of Sailor Moon Figuarts figures and some amiibos.
And that's that. Among the figures I would LOVE to add to this are some version of CW Devastator, Victorion, and Unite Warriors Grand Galvatron (mostly for the Starscream figure). I honestly wouldn't mind some other representation of him in "Ghost" form. I'd love to have the MP one, but I'd settle for the Classics mold or even the WFC one. Barring that, I'm pretty satisfied with my collection, and dont' see myself necessarily hunting down any of the older figures (unless, of course, I happen to run across a Pretenders or Machine Wars Starscream somewhere for like 5 bucks, then yes please).
Thanks for reading. And, as Starscream would say, *whine b*tch moan complain*