Your only option for any serious video editing is the Macbook Pro. You haven't told us your budget, so it's really hard to get specific with details.
But look at the 15" MBP, get the Quad-core CPU and go for the MOST machine that will fit your budget. The newer MBP's have soldered SSD storage, so you'll want to get enough of that and supplement that with an external HD. You will absolutely want 16GB of RAM. CPU is important, and if there's budget you can upgrade.
I would, however, you take a look at the
Mac Buyers Guide which tells you when is a good time to make a purchase. If you absolutely need the machine right away, then go ahead and purchase. There are some rumors coming out that the MBP's RAM will get bumped up to 32GB and a newer generation of CPUs will come, so you might want to wait for that.