Echoes dual world problem wouldnt have been as bad if they didnt ALSO give Samus Limited Ammo for her beam weapons. I mean, thats kind of unheard of, that I know of. And in a game like Echoes, that can get tedious with having to track and backtrack through the light and shadow worlds, it's frustrating.
However Ive noticed this much. its only frustrating and tedious at the beginning. About halfway in, it gets much better. and Sanctuary Fortress has got to be one of the most beautiful things ever.
But I still think Prime is at the top of all 3. Echoes is nice when yoiu get used to it, but you shouldnt have to get used to it, and the limited beam ammo was pretty ridiculous. (at least you could still charge up to fire uncharged shots)
Corruption was nice too, but felt a bit too linear compared to the other 2. Although it has some really nice and varied scenery, and I loved that Steampunk Skytown Elysia.
I also dislike the PED suit. it looks fine normally, but once it gets corrupted and turns blue, it just doesnt look as appealing anymore. Although, that probably IS the point. You wouldnt look too pretty either if you were being consumed by a glowing blue radioactive, highly mutagenic compound.
As for Other M, the more I play it, the more I realize that storywise, it's nothing but a wholesale ripoff of Fusion. It's definitely getting lower on my list of favorite Metroid games.
Oh come on, Its not THAT bad. So all because it has a few cameos and a narrated story, its a fusion rip off? (and because its on a space station?)