What is up with this plant, is it ready to harvest?? Pics

Ok so this plant is one of my four girls flowering right now. She is the only plant from clone, the others are from seed but all are the same strain. They all started flowering at the same time and are now about a month and a half into flowering. She got big buds faster the three others. She is smaller than the rest. It's buds look the most mature of all 4 plants and it smells more dank. However now the leaves have gotten terrible brown spots all over and it looks like the top half is starting to die. It looks like nute burn but I have flushed it several time now and it only gets worse. Is this plant just dying and ready to be harvested or what? What do you guys think?

(They are the first four pictures)

Anyone?.......

what plants are the troubled ones...

as the link says, the first four pictures

yes they do look sick indeed
if they are getting too old/over done
then the pistills will be turning amber.
if they're not then something's wrong.
check the water amount, lighting, any changes you've made
sorry i couldnt be of more help cos it could be so many factors.

peace

thats all right, I know there is something wrong with it. I guess I should have posted this in plant problems area. Maybe one of the mods could move it?