It's funny that you ask. It depends on the price. Other than in benchmarking, you really won't notice the difference between a 3770K vs 2600K. Both will be great in gaming and will depend on how good your GPU is. Ivy is clock for clock faster, but 5% ish. It may help with video coding, but not much. If you can get it for the same price as the 2600K, I don't see why not, but if it costs more, its really not worth it. You'll find others who disagree, but I would ask those users for benchmarks and make your own decision. Anandtech has comparisons between the 2:
You can see there are very minuscule improvements. Your real benefits would come from a 3930K with the 6 core / 12 thread processor, but that does jump in price.
I think the main question is how much video editing will you do. The most that I do is converting over my blu rays to my ipad. I don't mind my 2600K for that. If it was your job to constantly do things like that, the extreme platform may be best, but I think that if you went with 2600K and you did a low to average amount of converting, you'd be happy you didnt spend the extra money on the 3930K. It doesnt hurt to buy a 2011 board now, but really think about the chances of upgrading down the road. If its very slim, its not worth going with the 3820.
I am the same way as you are when doing this sort of thing. I can spend hours reviewing every decision. If you are doing what you are doing today with your sig rig, the 2600K is going to be a huge performance increase for you.Edited by yanks8981 - 5/24/12 at 8:49am