For the price difference, there's no question which ones I'd take. RATCHETS!
#1, they're safer. No chance in coming unhooked. (Lever binders should be saftey wired)
#2, ease of use. Lever binders sometimes can be a bear to get tight. I used a pipe "cheater bar" to snug 'em down when I still used them.
#3, D.O.T./State Vehicle Enforcement Officers tend to look more favorably upon the ratchet binders. What makes them happy, makes ME happy.
I still carry 4 of my old lever binders on my trailer, along with a few spare chains, but I use the 6 ratchets and grade 70 chains FIRST, and if I need more chains, the older stuff comes out of the tool box. (I've hauled loads home from auctions that have 6 or 8 pieces of equipment on them. Chains running everywhere!)
And I have a feeling DOT will finally outlaw lever binders, in favor of ratchets. I'll use my old lever binders, but I sure wouldn't buy any NEW ones.