Guitar for under 6K
Under normal circumstances single coil GB&A or J&D will come within your budget. Givson too wil come withing your budget.
For some unknown reasons, humbuckers will be a li'l costly.
Within the 6K budget I dont hink you will get a guitar with double locking Floyd Rose bridge. So guess u will havta do with normal Fenser Stratocaster kind of tremolo unit.
U may also have a look at Tansen, however I feel they might be more expensive.
So GB&A or J&D Stratocaster or Telecaster model will do. Try to get humbucker pikcups (atleast on bridge), but ofcourse single coils are marvellous, so no probs if your guitar has sigle coils only (mine has :p )
Here is a stratocaster: http://en.wikipedia.org/wiki/Stratocaster
Humbucker pikcup: http://en.wikipedia.org/wiki/Humbuckers
Single coil pickup: http://en.wikipedia.org/wiki/Single-coil
All the best!
You donít get what you deserve, you get what you negotiate.