I am currently deciding between the Hyperlite Mountain Gear Windrider 2400 (http://www.hyperlitemountaingear.com...windrider.html) and 3400 (http://www.hyperlitemountaingear.com...drider-78.html) for my 2013 SOBO AT thru-hike.

The only substantial difference between the two is the volume. I have hiked with the 2400 for four days and three nights with no real complaints, but am worried I might wish I had more room for a thru-hike. Has anyone had space problems with a pack this size? Or does anyone absolutely recommend the bigger pack?

Thanks,
Rich