I've tried both Kobo Writing Life and Amazon KDP. Kobo feels more indie-friendly, especially for authors targeting international readers. Their royalty rates are straightforward, and they don't require exclusivity, unlike Amazon's KDP Select. Kobo also has a cleaner dashboard, which makes tracking sales easier. However, Amazon KDP has a much larger audience, and their promotional tools like Kindle Countdown Deals can really boost visibility. Kobo's promotions are less aggressive, but they do have partnerships with libraries through OverDrive, which is a huge plus if you want your book in libraries. Both platforms have their strengths, but Kobo is great if you want flexibility, while Amazon is better for maximum reach.