Metroid Prime 3 really lacks the atmosphere of the first two Prime games, so you're probably going to be disappointed with that one. (Still a great game though IMO)
I never had an issue with the menus in MP2. Personally I think the weird floaty rotating interface is really cool and I like it. My main problem with MP2 is the ammo system, which makes the game a lot less enjoyable to me.
I think Halo 5 is one of the best Halo games, in terms of both single player and multiplayer. Fight me