I'm 6'2" and weight 220. Like a lot of guys, I use a Q-core SL and I really like it. It is light, comfortable, and packs small. I do hate how slippery it is, but even with that headache, I end up leaving my thermarest pads at home one every trip that I take. I'm going to try COlineman78's...
I'm sorry to hear about your son. I hope that my small donation can help ease some of the stress that you and your family must be feeling. Best wishes!