There are many great guitars. Honestly the more expensive they are the better quality in many cases. If your looking for acoustic and want a great sound, than u should look at the ones starting at $1000. You should really go into a guitar store and try out the different guitars to see what is the best fit.
Really will depend on what sort of sound you are looking for, or what type of music you are going to be playing. Also, will make a difference if you need an electric, or acoustic. So without knowing exactly what you are looking to play, it's kind of hard to say, but for all around quality and guitars to match a variety of needs/sounds, Gibson is probably one of the best.