I was originally going to go with a 6" bds long arm , but now I'm leaning toward the carli 6" system. It's a lot more money , but It may be worth it with the high grade components and much smoother ride. I have an 09 3500 megacab.

Anyone know much about them thanks.

I offroad quite a bit and my drive to work is 45-1hr each way on a very bumpy road.

The BDS Longarm kit and Carli are both awesome lifts. I've been around both systems (8"bds) and to be completely honest i think the BDS long arm is a better system. Either system will hold up just as good as the other, but they both have their weaker points.
I'm going with a BDS 8" Long arm on my mega cab.

The 8" looks beast mode on a megacab . What size wheels and tires you going with? I'm going with 37 toyo on 18" wheels. 20" looks nicer but won't ride as nice

You wont notice a 2" difference on a 37" tire.

alright ill look into that, never ridden in a truck with 37's before

On a street tire setup with 3 or 4" of sidewall you would notice but with those you will have almost 9" of sidewall.

Going with the usual bro status setup. 22x12's and 37's

U got bikes or quads ? I like the 8" looks , but definitely would be a hassle loading my bike and tools etc...