Room correction

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I prefer SAM over room correction anyway, I don't want a completely flat frequency response. If you have problems in your room then buy some acoustic material or learn how to place your speakers better

I agree. My listening room is also used as a musicians practice room. Musical instruments sound completely natural in here without computer correction ;-). It is my firm belief and experience that our ears compensate for bass room effects, since they exist in all rooms and always have. The sound of musical instruments played in my room does not need correction and nor does my hifi.
Correcting for one place in a room also makes the sound more uneven elsewhere in the room. I suppose if one has a small room, only one person listens and they never move and the speakers can not be placed somewhere appropriate then some sort of correction may be needed. Higher frequency anomalies can give odd effects too which are not easily corrected digitally so need intelligent acoustic solutions. It can never compensate for poor speakers in acoustically unsuitable locations. Clue: how many concert halls have the piano in a corner?

Many years ago I did some acoustic measurements in rooms and halls (I did noise and vibration research as a first job) and the frequency response measured in different locations in the room varied hugely yet, unless there was a powerful echo (which there was in a small cluster of seats in the Royal Albert Hall before it was treated) listeners correct for these variations more or less immediately in their heads, otherwise there would be only one small area of useable seats in a concert hall.

I spent some time positioning my speakers and sorting the room when I first built it.
Getting the room acoustics good is very much more important IMHO than applying a sticking plaster to an amputation by using computerised room correction, IMHO.
What is more it will cost less than some of the foo cables being discussed elsewhere and make a very much more worthwhile difference IME.

The one small concession I would accept is a huge subwoofer which may, by necessity, be positioned completely wrongly in the room from an acoustic POV may well justify using some sort of correction device.
Just my opinion and experience.