As for daypacks, well, I hear your pain. Most of them aren't made to fit the taller and shorter minions on the bell curve. So look around for packs that come in a sufficient range of sizes to allow for a "tall." One such pack is Arc'teryx's Needle 45 ($225; www.arcteryx.com), a good-sized (about 3,000 cubic inches), technical daypack that is available in a tall size to fit a back length (just below your neck to just above your butt) of 23 inches. Same for Osprey's Eclipse 36+5 ($169; www.ospreypacks.com), another roomy daypack (2,400 cubic inches in the large size) with an excellent suspension. Mountainsmith's Achilles ($170; www.mountainsmith.com) is in the same fit range as the Osprey and Arc'teryx when you purchase the large size, and it's a touch largerabout 3,200 cubic inches.
Of course, you'll want to try some of these on in a store to see what works best. But I think with a little care you'll find one that accommodates your lo-o-ng torso. Let me know what works!
For more topnotch haulers, check out Outside Online's all-new Backpack Buying Guide.