You've got a number of different packs worth considering. Each have got their pros and cons, and I'll discuss those of notes.
The new BCA Float is considerably lighter and more improved for this season than previous years. In a volume of 32L is weighs 6lbs 6oz, and costs $550 + the $175 for the air cylinder.
The Wary Avipack, would be my personal choice, although one of the heaviest airbags out there at 6lbs 15oz it's got really good internal pockets and a back panel access which isn't a common airbag feature. I have heard that the diagonal ski strap isn't the best and is quite fidly. Cost - $829 @33L
New for this season, Snowpulse have brought out the snowpulse lite, which is by far and away the lightest airbag airbag on the market in 30L+ class at 5lbs. It features snowpulse's lifebag system, so the balloons surround the users head to prevent trauma during a slide.
This year The North Face have introduced the patrol 24 ABS. It's essentially the North Face's patrol 24 pack with an airbag provided by ABS. Being smaller in volume it's more for sidecountry or cat/heli days.
For me it would be between the Wary Avipack or the Snowpulse Lite 35. I hope this helps, if you got any more questions, feel free to pm me.
Joey