I'm still using SU 2017. I've been reluctant to use the new web-based versions, mainly because I don't like browser-based apps, and because the web-based version doesn't support user-created textures, which I use in most of my models.
Hi Ron. I didn't abandon SU 2017, but I do find it tedious to tweak designs with it. I downloaded Fusion360 a while back, poked around, but didn't spend enough time to learn it. I saw Onshape mentioned here on this site recently, and thought I'd see what the commotion was about. I'm still in the crawling stage in learning it, but for iterative design, it's much better than SketchUp in my opinion.
Onshape does have its downsides. As you mentioned, doesn't do surface textures, it can be difficult to understand the various constraint dependencies that control the model, its 3D navigation around the model is kind of clunky (mainly rotating), so there are definitely pros and cons to both programs.