The 4" does make a difference, but it isn't the difference between needing a SPE or not, IMO. Whether I use a 20" or 24" inch pad, I still need something extra on my shoulders and hips.
“Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story
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- Designer, Jeff's Gear Hammock / Pack Cover
IMPOSSIBLE JUST TAKES LONGER