CAT5e cable

I've been just picking up whatever (riser) cable is conveniently available,
in the usual 1000 ft boxes.  No real focus on manufacturer, etc.
But, had to run some drops in EMT recently and noticed a marked difference
it the overall durability of the different cables that were being fed.
One seemed "flimsier" than the other -- no doubt related to the jacket
composition.
I notice the cable from the (outdoor) modem has an even more duable
jacket.  But, attribute this to it being "outdoor" cable (none of the
stuff I've purchased has been thusly labeled)
Any tips on what to look for in a *description* to select for the "nicer"?
cable?  (I could probably look at the markings on the jackets to identify
the different brands)