I think cube has some incredibly good offers in europe, so if your not your own mechanic, I would definitely consider Cube at your local bike shop. The new Canyon Grail is also quite nice and the prices are comparable to for example QuickPro complete bikes.

Of course cube doesn't offer everything and if you want something specific you might not find it with Cube but it doesn't sound like you have very specific requirements.

How tall are you? Do you think you might want a 32" bike in the future? Then keep the Topstone 3 for now and wait until there are more 32" options.

If you want to win races now, you could probably benefit from a LCG072-D, but even more so you should upgrade the wheels and tires of your Topstone 3 (if you haven't already). But of course training is the most important aspect.

Do you want to build a custom bike because that's something in itself that you want to do? Then go for it.

Also your not necessarily going to get a better bike from cannondale or scott than building a custom bike with a good chinese brand frame (it might even come from the same factory as the cannondale or scott). If you know what you are doing you can build a better bike or less. So to be honest, I don't think your asking the right question.
If you don't really know how to build a custom bike or don't really want to, get a complete bike (chinese or western).

Hi everyone, this is my first post!

I'm building up a new gravel bike and I'm desperately looking for a light carbon crank with a 24mm titanium axle and a sram 3 or 8 bolt interface (because for Cinch there doesn't seem to exist any oval aero direct mount chainrings, if there exists such a chainring please let me know, I'd probably go with a Cybrei or Overfast crankset) and the only one I found is the Wuzei and this Bigrock one.
The Wuzei sometimes seems to have some creaking issues and I can't really find much more about the Bigrock except for this thread.
So how is this crankset holding up? Any issues?

Thanks!