I am sorry if this has been covered ad nauseam. I am 5'11" and weigh 180 lbs. According to the Clark Comfort chart, the NX150 seems like a no brainer; cheaper, less bulk, and 5 oz lighter. But is there extra room and firmness with the NX250 for someone my size that could increase comfort on cold rainy Northwest nights to justify the cost, bulk, and weight difference?

Also, do the NXx50 package costs include the drip rings and tarp tie out cords or are they "nickel & dime ya" add-ons?

Thanks for your guidance.