I used to have some Alto TS112W’s that were a similar size to your Peavey’s. I always transported them in those Gator Cases bags, and when I sold them (they were 3 yrs. old) they still looked like new. I got top dollar for those speakers when I sold them back to GC because of the excellent condition.
I agree with using bags, most of my stuff stays in Gator, Arriba, and my cables are in a rolling duffle. My controller is in a hardcase that came with it. Shamefully my speakers are currently transported with no protection.