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I use the Tailfin carbon rack, panniers and trunk top bag, primarily for commuting and shopping, with occasional multi-day touring trips. The system is superbly designed. Moving between bikes takes a matter of seconds and, when on the bike, it is silent, rock-solid and weighs very little. It's an expensive option but by far the best.
Given it's winter time, I have yet to use my Aeropack on any extended bikepacking trips, but I'm looking forward to it in the spring. I have fitted the Aeropack and 10L mini-panniers to my gravel, hardtail and drop-bar MTB bikes and the fit is amazing. Such a well-designed piece of kit. The universal thru-axle makes swapping between bikes easy. I love being able to load and access contents of the AeroPack and mini-panniers easily while mounted on the bike (something that was hard to do with a conventional seat-pack/handlebar roll). I was a little on the fence about the AeroPack vs rack+trunk bag, but I'm glad I went with the AeroPack. It's more streamlined, lighter, and removal from the bike is way easier than I expected: pop the two quick release levers on the lower arch, then the one on the seat tube and the whole thing removes and folds. Takes about 10 seconds. Given how easy it is to remove, I think the standalone trunk bag is most useful for commuting and the Aeropack is perfect for touring/bikepacking.
Perfect integration with the bike.
Noiseless
Robust