I LOVE the Starre Pure!! I am actually vaping on a coil I washed exactly as you described right now and it's every bit as good as it was the first time around. I am a huge fan of the ceramic coils.
I have been looking at the OBS Engines. I don't have a single tank I build on because I am a #lazyvaper, lol. I really do need a rebuildable, though, and I have heard great things about the OBS line. Thanks for sharing your thoughts on that!
I think you are probably right about a silver tank looking good on the Arthur, and the size of the Pure tank is probably just about perfect. We shall see, though!