Hey bud, glad your starting to snowboard. 158 seems good but i need to know your weight first and your height to see what size board is perfect for you! Im 5'5 and 115 pounds i have a 51 solomon scout for freeride, and thinking about vetting a 45-48 for mostly park. The biggest thing you shoukd worry about is the weight.
The SL is awesome on groomers. If you want more board feel (i.e. to feel the ground underneath you more) then maybe look somewhere else. I liken it to the ride in the BMW vs a Mercedes (oh no another car analogy). The BMW gives you more road feel and is a bit more responsive. The Mercedes is like driving with a cloud between you and the road.
Neither is bad or good. Just depends on what you want. I had a stiff Technine but there was more feel of the hill than the SL. I loved the SL for cruising. Might pick up a used one if cheap later this year I do miss it.
Does anyone know any good shops not owned by Vail that would maybe give me a deal if I buy everything from them in the Vail/Beaver Creek area? I heard most of the shops are owned by Vail and won't discount.