.... wine and xanax/klonopin, the benzos by themselves feel "cleaner" ....
Funny you should mention the "cleaner" feeling when mixing/potentiating benzo with wine, because I've personally found that potentiating opies (such as Codeine, Oxy, Morphine*** - the CYP2D6 substrates!) with DXM - although it definitely potentiates said drugs, it find it makes - when compared with them straight - the high feel
quite "dirty". I'm not entirely sure how to explain it correctly. However at a quick (without any research. Basically just going off a "very little [read: no :/] sleep over the past 24 hours(ish)"-stretched brain

) guess I'd say it'll be due to the (additional) dissociative - and to a lesser extent (since they doses required to potentiate said substances are no way near as much as what would be required for a straight DXM trip!) - the deliriant effects (of the DXM)!
Anyone else care to agree/disagree?
....
Obviously you want to be careful with your proportions as too much can easily cause you to fall asleep and not wake up
..
Definitely good advice! I'm putting a +1 for this basically because I had a
situation whereby I, took too much DXM (with a 4pk, 30tablet, CWE of a "12.5mg-ea tablet generic brand") and was in a state of "dissociative-ness" (I'm making this word up! You all get what I mean! 8() and basically in my, err, "inebriated" state I came to the conclusion that
I was
an alien, and the
whole world was more or less here
only because I was concious! And my life had to consist of basically; living in my room, watching movies, and only get up and out of bed to get food/fluids .... otherwise the world would cease to exist (if
I didn't exist)!
Was an, umm, how would I put it? An
extreme experience!* Probably the only time after a trip (whether that be anything from weed, to MDx, to MXE, to LSD trips!) that I kind of feel like I need to/should (in order to, I guess, possibly
learn from, or just to
make sense of, said trip and) write a trip-report!
***Quick edit (so I don't get flamed!
) re Morph being a substrate of CYP2D6, just double checked (admittedly only on wiki just yet) and it confirms the cytochrome P450 (CYP) family of enzymes involved in phase I metabolism however nothing specifically on the former (specific) enzyme...so don't quote me on that! 
*Note that I say extreme since that's what it was for me! I'm sure this would/might/always be the "norm" for those majorly into their psych's/dissociatives but like I said, for me, this was a very new (and somewhat frightening**) experience.
** Note 2 that when I say "frightening" I found it was initially, but within, I dunno, say about 15mins (at wild guess considering obviously my temporal cognition was way out the window!) of kinda "hitting that wall" I guess I just kinda "went with it" and "accepted it as truth".