I returned a Solplex and bought an Altaplex instead. Just not enough room in the Solplex for me (6'1", 185).. a weight penalty I'm OK with
I opted for the Arc Haul vs Arc Blast, a weight penalty, but the Haul fabric is more robust and can take more abuse.
There comes a point of diminishing returns, and I want to be comfortable #1 (my pad is a BA Q-Core SLX wide...far from the lightest pad, but pretty darn cushy for its weight!)
I could see myself going stoveless on short trips, but not a thru.