Due to the many options thats not easy to compare... plus I don't know how much could realistically be transferred to the Mini. I'm currently on vacation, so I have neither at hand: please take any comments with the necessary grain of salt. And keep in mind that for a valid comparison it would be necessary to get the exact same output volume setting, which I'm missing appropriate equipment for.
I normally use the Classic with max crossfeed and medium correction (i.e. a little toned down upper mids/treble) as I find it a little hard in the upper mids otherwise. As far as I remember thats not the case without crossfeed, that effect is also described in the manual.
On the Phonitor I seldom use the matrix settings with the T1, but like them with the T90. It also depends on the kind of music I'm listening to at a given moment: electronics gain nothing I'm otherwise missing while classical, especially larg orchestral works, do win.
The crossfeed by itself is quite subtle on both, while the spatial settings on the Phonitor are very easy to notice and do what they are intended to do: narrow down the soundstage and move it in front of you (i.e. not 180° through your head).
What stroke me most when listening to the Phonitor for the first time was its enormous level of detail that effortlessly floats around your head, not trying to impress or being in the foreground but suddenly so obvious to notice. Its dynamics are simply stunning.
The Classic gives the T1 a bit of a fuller bass (that may of course have something to do with the slight emphasis I activated as said above). Its unassuming, does not try to impress, delivers music with detail and still in a very relaxing way. What I don't like is that changing volume produces distortion (due to the implementation using relais to get exactly balanced settings for both channels). Its of course only noticable when moving the volume poti.
Hope that helps a bit. Unfortunately the date for the Mini is not yet fixed... as fas as I know current target is end of May.