^Of course there is no concern about timbre/voice matching the sub so there are many to chose from of good build with plenty of power that produce accurate bass. I don't know any reason to chose the Dali sub over any other, except perhaps for some aesthetic other than performance.
When chosing a sub one must consider the volume of the room and the effect of large non-closable openings. Another consideration is the objective-is this for HT/movie effects, music, or both?
Another crucial factor fin overall results is proper placement of the sub(s) in the room for smoothest bass response. Using two smaller subs (each with one 10 to 12" driver) rather than one larger sub has several advantages not the least of which is that with proper precise placement you can cancel out many room modes and smooth the bass considerably even without the use of bass traps or room EQ.
Speaking of EQ, several brands/models include REQ measurement and correction capability in the sub electronics. I use two such subs, Velodyne DD10s that perform very well in a 3300cu ft room with two door-sized openings for both HT and music.
It is of course also crucial to plan and set up the bass management properly.
I have done some research, and in a way there is no concern, and there is. It all depends on the quality of your subwoofer and RC/DSP possibilities and placement of the woofers and speakers, if you are able to integrate the sound, or not. But this is what you say also. I would never use subs without a DSP to integrate. For example a Lyngdorf.