What Razor62 said. Diana Eleven, Two-forty, Two-Fifty and Two-Sixty are Chinese springers upgraded some and QC'd more than most. So, if you are looking for a better Chinese gun, get one of those, at the power level and stock material of your choosing.
German-made Dianas are the 280, 34, 34 EMS, 350 Mag, 48, 52, 54, 56 and 460 Mag (some of those recently retired from the production line) plus literally dozens of older models; Diana has been making airguns for c. 130 years, way longer than any other manufacturer currently in business.
German-made Dianas are simply great guns. Diana bashing is a favorite pastime for some, but that's based mostly on frivolities such as current Diana trigger guards being made of tough plastic instead of pot metal as on Weihrauchs. When it comes to accuracy, consistency, dependability, and durability, things that actually matter in a gun, Dianas are not an iota lesser guns than Weihrauchs. Taste is another matter altogether.
I've had more issues with my four Weihrauchs than with my eight Dianas, to date.
If you are looking for a .22 cal springer, you can forget Weihrauch - their .22 cal barrels are mostly terrible. I've yet to have a bad barrel on a .22 cal Diana.
One thing I like about Dianas is that they actually shoot what the manufacturer claims. Weihrauchs only shoot what the company states with Hobbies, or the lightest-weight lead pellets available, wadcutters with terrible BC. Dianas shoot the (much higher) claimed velocities with FTT's, or real-world long-range / hunting pellets. That has been my experience.
Many people compare a middling Weihrauch to a magnum Diana and exclaim how the Diana was harder to shoot accurately, harder to cock, noisier etc., without taking into account the magnum Diana puts out 50% more muzzle energy! Apples to oranges, big time.
When it comes to high-power springers that are actually highly accurate, Diana is about the only game in town. They are true gamegetters, for decades on end.