Actually, if you want a stiffer binding, the Ride SPI is a better choice than the softer Delta.
People like the Burton Cartels, but they are my enemies. I do a lot of presses and the toe caps have a tendency to come loose. This has now happened to me with 3 different sets of cartels on the same rear foot so I'm guessing it isn't a fluke.
If you are a speed of entry fan, Flows are a good choice. Flow NXT-FSE or NXT-ATSE is really nice. They have medium flex and aren't as soft as the Deltas.
Rome Targas are great bindings with adjustable stiffness.
K2 Autos is another option and I happen to like these bindings more than I thought I would.