You get what you pay for.  Took my first and last trip on Spirit.  Flew from Las Vegas to Fort Lauderdale and back.  The plane was a dog.  My window seat looked like it was cleaned with mop water.  Garbage in my seat pocket.  A seat that wouldn't recline.  Dirty head rests.  A 4.5 hour flight and i'm not even offered water?  Maybe that's a good thing since only one of the two lavatories was working.  Spirit did get me there on time, but I ran for a shower immediately.