I bought it for the Samsung S9, the 11-inch. Apart from the fact that the arm of the base (not the arm that supports the tablet) is desperately tight, otherwise the base is very good!!!

Flawless. Just heavy enough and just firm enough in its incline. It doesn't move easily and hasn't loosened at all.

It keeps the tablet stable even in a completely vertical position. Very good material construction, very high quality. I recommend it!

Premium construction feel, very sturdy, very elegant, beautiful, and generally a product that inspires confidence and trust during handling.
I have placed it on a countertop and put an 11-inch tablet on it, which I use as a control panel; the anti-slip stickers on the back and the grips prevent the tablet from sliding out of place during use, the same goes for the base itself, which does not wobble at all even when I use control buttons located around the tablet and at its corners.
Get it with your eyes closed.

Sturdy, metallic, can support tablets in the sizes mentioned. An unfortunate design flaw is that the rubber at the top of the base (with the perspective that the device would not rub against the metal plate of the stand) was not effective for an 11-inch tablet that I use, as due to the angle at which the device stands, it does not touch the protective rubber and rubs against the metal. Otherwise, it seems durable and the joints are tight, which makes it stable but also a bit difficult to adjust.

Of course, I haven't bought other bases to compare. However, for this specific metal base, I can say that it has excellent quality and the right weight to be stable. The difficulty of handling obviously has to do with the long-term avoidance of loosening the joints. It has a nice gray color, looks luxurious, and its price is satisfactory. I recommend it.

The base is excellent.
Sturdy, heavy, enough to keep the tablet perfectly stable and secure.
Even in an upright position (portrait), the tablet (10.4') remains stable, without giving you even for a moment the feeling that it might flip over.
A base that truly deserves its money.

After almost 1.5 years of hosting a 10" tablet and enduring rough treatment from a kid, it remains in excellent condition, being durable and with the joints still tight.