I thought about including every suit and armor from every game, but most of them are just repeats with different colors, with most of the actually different variants coming from the Prime games.
Metroid / Metroid 2: Return of Samus (NES/GB):
Super Metroid (SNES):
Metroid Fusion (GBA):
Metroid Prime 1/2/3 (2 and 3 have a different visor and some smaller changes, but they're almost the same) (GCN):
Metroid Other M/Smash 4 (Wii/Wii U/Switch):
Metroid: Samus returns (3DS):
Metroid Dread (Switch):
IMO: It's Metroid Prime. It's the most grounded and well balanced one. Dread comes in second though.
I can't stand Other M version. Too sleek and focused on making Samus look feminine.
Metroid / Metroid 2: Return of Samus (NES/GB):
![nes_metroid_yellow.png](https://www.retrogamecases.com/wp-content/uploads/nes_metroid_yellow.png)
![latest](https://static.wikia.nocookie.net/metroid/images/5/5e/Metroid_II_US_boxart.jpg/revision/latest?cb=20210824082935)
Super Metroid (SNES):
![samus-aran.png](https://www.nintendo.com/etc.clientlibs/noa/clientlibs/clientlib-ncom/resources/images/page/super-nes-classic/interview-super-metroid/samus-aran.png)
Metroid Fusion (GBA):
![latest](https://static.wikia.nocookie.net/metroid/images/0/00/Fusion_Suit_art_2.jpg/revision/latest?cb=20210818223502)
Metroid Prime 1/2/3 (2 and 3 have a different visor and some smaller changes, but they're almost the same) (GCN):
![129-1293720_samus-aran-transparent-images-metroid-prime-samus-varia.png](https://www.kindpng.com/picc/m/129-1293720_samus-aran-transparent-images-metroid-prime-samus-varia.png)
![129-1294267_samus-aran-metroid-prime-2-hd-png-download.png](https://www.pngitem.com/pimgs/m/129-1294267_samus-aran-metroid-prime-2-hd-png-download.png)
Metroid Other M/Smash 4 (Wii/Wii U/Switch):
![1000](https://static.wikia.nocookie.net/ssb/images/b/b2/Samus_-_Super_Smash_Bros._for_Nintendo_3DS_and_Wii_U.png/revision/latest/scale-to-width-down/1000?cb=20181031192826)
Metroid: Samus returns (3DS):
![latest](https://static.wikia.nocookie.net/metroid/images/0/08/3DS_MetroidSamusReturns_char_01.png/revision/latest?cb=20170617175630)
Metroid Dread (Switch):
![E39g_uCXIAANCft.jpg](https://pbs.twimg.com/media/E39g_uCXIAANCft.jpg)
IMO: It's Metroid Prime. It's the most grounded and well balanced one. Dread comes in second though.
I can't stand Other M version. Too sleek and focused on making Samus look feminine.