well not claiming to be any expert, but for my 2 cents, I would be rather simple about this, what ever stone crusher you have/or PLAN to have, I would simply start with looking at the spec's for that, and what is needed to run it
and then try and find a machine the right size, , or better yet, a bigger than needed so your not beating the heck out of a unit always at it peak power curve to run the crusher
so, before suggesting "X" CTL< I would think the bigger thing to know first is what are the demands of the stone crusher you have or are planning to have
and from there, talk to all the OEN's you have near by, and look at machines with 25% or more flow and HP, /lift and likes, and I would also think WEIGHT will be your friend,as will foot print, for a stable machine here
and I gather this also simply means your looking at the LARGEST CTL they make, as most crushers I know of take some serious HP to run well,
you can also ask local OEM dealers if maybe there isn;t a better machine to run them with too
so you can get larger heavier HP machine that will have extra power on board to not be running at max all the time to maybe make it last longer!
I would also gather you may want some better GLASS protection , as in HD screens or likes, for flying out debris , which many machines will have as options when ordering!