i don't think alot of people use opensuse. I did when I had a blackbird, leap was pretty good I liked it more than fedora but codecs for video playback were a problem unsure if that's resolved now. There was also the issue of missing libraries in the repo needed to build software on occasion. When I used leap I had to use a newer kernel for some ppc64le patches/updates that weren't in the standard mainline leap kernel. Tumbleweed is pretty incomplete, it's near unusable for a desktop imo. Fedora had more software support but I wasn't really a fan of it, it had problems with my mouse when clocked at 1000hz and just didnt feel as solid/stable. most people tend to use fedora or debian though. I used a blackbird as a main desktop, it's not super different from x86 linux imo.