PS of Sweden Hackamore Bridle - I think I may be the only fool doing endurance in not only all leather gear (instead of synthetic) but in high end PS of Sweden gear. I exchanged the mechanical hackamore it came with for the S-hack, and I like the way it works. As much as I like this bridle, it's not a good long-term endurance prospect. Their signature easy-on-off brow band tends to come unhooked when Nilla shakes her head and gets the reins tangled on it.
PS of Sweden reins - The reins that came with the cavamore are perfect for endurance. They are long enough for Nilla to graze without me having to reach down and they have clips on the end. I have unclipped one end and used it as a lead rope to walk her across streams or boulder sections of the trail. They are amazingly convenient.
Easyboot Old Macs - I am trying out some different varieties of Easyboots as the Old Macs were great for shorter distances, but they're not meant for more than 25 miles per week. In Yosemite after going almost 50 miles in 3 days, she started getting some small rubs from them. I don't think they'd hold up to a 25, but I do love them for shorter rides - they provide a lot of cushion and stay on really well.