With 5 reviews all with 5 stars you expect this to be a brillant Sci Fi TV series.
I hink this is not the case, my option.
It is a cheap budget TV series which combines bits of farscape, the A team and wild west and it does not work on many levels. Usually each episode has a bar fight with stoods or chairs being thrown and smashed over the bad guys heads and then the ship comes and picks them up.
If you want strong characters, good story lines, good special effects then watch startrek, babylon 5, stargate, stargate atlantis, fringe, grimm or eureka. You will not be disappointed with these series.
If you want bad stories, scripts, cheap sets and not so good special effects then buy firefly.
That said, the film Serenity based on Firefly is far better and IS worth watching, in my option.