Mediocre performance and poor quality accessories. The ventilation valves leak, even if just a little, no matter how much you tighten them. I replaced them with others and the problem was solved, but in any case, it's an extra expense.
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Also, the plugs that come with it didn't fit, and I had to use my own. The radiator does heat up, but not as much as I expected. Of course, I didn't do a calorimetric measurement of their performance, but my subjective feeling is that they don't heat enough. Overall, I consider them mediocre.
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Edit 05-04-2022: Of the three Splindid bodies I bought, the one I installed in the bathroom has started to rust. Poor electrostatic painting. I'm removing another star for this reason.