Ratcheting! Either I never learned how to get the over center tight the 1st time or they're a POS. I'd get everything tightened down then drive for a couple miles and they'd be loose.
With the ratcheting type I can get them tight the 1st time. I still check down the road a few miles and periodically the entire trip. Ratcheting type will stay tight!
I use chains on most everything. I do have some ratcheting nylon straps that I use for small stuff.