The Fijiflex material is a wet chemistry RA-4 print with a polyester backing. It is very glossy but is also has the same limitations of an old technology wet print, less dynamic range and less gamut than a good inkjet print. They also have a display life of around 40 years.
An acrylic print is an inkjet print face mounted to a clear acrylic sheet. It is also glossy just not as much as the Fujiflex print, but if it's made with an inkjet print it will have a much greater display life, better DR and gamut than a RA-4 print. The drawback to acrylic prints is the acrylic scratches easily and the acrylic and print can separate if exposed to extremes of heat as they expand at different rates.
The glossiest prints are metal. Their drawbacks are poor dynamic range and a display life of around 60 years, about 1/2 of a good inkjet print, but they don't scratch easily though the corners of the thin aluminum panels they're printed are easy to bend which is why some people will put them in frames.
All three are very punchy and will look great.
