Guild Wars 2

I want to run a shatter build but have a few questions if you wouldn’t mind.

Firstly is GS or Staff?The Staff seems to get more clones out which is handy and has the extra survivability from 4, 5 and boons from Winds of Change, but primarily uses conditions and as far as I understand shatter builds you should be building power and crit?

Which leads me nicely to my second question. Are power and crit the stats I’m after?

My final question is more on mechanics. When shattering sometimes my clones go straight for the target other times they just seem to blow up where they are. Do they charge to the closest target or my shatter target and if i’s the closest one any tips on getting them to the target I’m after?

I’ve watched a few videos and read a few guides but I’m still a little unsure on these points. I keep changing my build to see what works for me as my Mesmer is very much in its infancy and I’m still learning but any guidance from experienced Mesmers would be much appreciated.

Thanks in advance