Arva & Pieps both make good beacons. The BCA Tracker 2 and Ortovotx 3+ are two more new 3 antennae transceivers that work great.
Make sure you get a shovel with a large blade. Extendable handles are nice (shorter in pack / longer when in use).
I recommend the Ogio Flak jacket. You can't carry as much gear as a backpack, but it can hold everything you need. It keep things really balanced (especially nice for snowboarders) and is very comfy. Hard to find because people love them. Check snowmobile sites.