The first two were easy to eliminate, the Glamour polish isn't very pigmented and needs 3-4 coats to build up opacity. Sink in to Mink is a great nail art base but on its own isn't that special.
Hot Under The Collar is quite a vibrant orange with a glass fleck finish. More a delicate orange compared to the straight up neon Flip Flop Fantasy.
In the top two are Nails Inc and China Glaze.
Star Street is a pale peach colour, a soft delicate kind of shade which would get a lot of wear in spring. The brush on these polishes are great as well, flat and wide with a curved end so it easily fits against the cuticle.
All that said the winner for me is Flip Flop Fantasy, a bright neon orange. Very hard to get a colour accurate photo of! There are a couple of incarnations of this polish, not sure which this one I have is, however it isn't the first one. One I think would be great for the summer.