Hey Swapoodle, I am a all mountain hardbooter and this past season I switched from UPZ and TD3s to AT (alpine Touring) boots and Phantom bindings. It was the best move I have ever made while snowboarding. The boots, Scarpa Spirits, are soft for AT boots, 3 buckles with a hike/walk forward lean lock lever on the back. They are super light, great flex for boarding (i will probably modify them in flex to make them softer this year) and easy to hike/walk in. I also switched bindings this year to the Phantoms and the combination is excellent. The first thing to note is the stack height, with the old set up I was almost 5" under my heal to the deck of the board, new set up about 1.5". This was huge for me. Second thing I noticed was how quick, snappy, and light the overall set up is. One thing to note is stance angle, with Phantoms the max angle is 30 degrees so I change from riding 47/43 to riding 30/30. It took a little getting used to but overall I like it now for all mountain performance.
http://www.phantomsnow.com
http://www.backcountry.com/scarpa-spirit-alpine-touring-boot?s=a
http://whistler-creekside.com