I won't lie to you... The Burton Custom Flying-V was one of my favorite boards at the test fest this year. Actually, it was my favorite at first, but over time it has just become one of my favorites lol.
It's not the super stable, but you really have to push it to even start to feel sketchy. I'm talking about maching down double blacks with icey conditions. If you want to do that type of riding, I'd get a Lib Tech or a Burton Custom X (will be expensive unless you find some older models).
Just remember, you'll probably want to pick up Burton EST bindings for this board. That's going to cost you extra $$$. You can get conversion plates, but I just feel that it makes the ICS pointless. If you aren't going to use the ICS/EST combo, you might as well just get another brand's board. Not because it makes the board crappy to use with other bindings, but because you are paying a premium for the system.
Burton Custom Flying V Snowboard 2011
Back to the Lib Tech Suggestion. This is a little over your budget, but is a killer stick. The T-Rice is super stable and is going to absolutely slay whatever you throw at it. It's a stiff board so it won't be good on jibs at all, but it doesn't sound like you'll be riding any rails so you're golden.
Lib Tech T. Rice Pro Model C2 BTX Snowboard 2011
I personally chose a K2 Turbo Dream. It's not going to be the best pipe board, but it will pop enough for you. For the rest of your type of riding, it is going to be awesome.
K2 Turbo Dream Mens Snowboard 2011
Ride DH2 - Great all-mountain deck that will handle speed very well. It's also going to be killer in the half pipe if you ever decide to get really into it. This thing has a ton of pop.
Ride DH2 Mens Snowboard 2011
Rome Agent - I haven't personally tested this board, but it's getting a lot of rave reviews
Rome Agent Rocker Snowboard 2011