I've tried DXM once with a mate, only had 300mg each, second plateau dose? But anyways, i thought it was quite unpleasant, i wasn't able to stomach any alcohol on it, i felt pretty crook because i just drank a bottle of cough syrup in 5 minutes and i wasn't really euphoric or happy... Just mild visual distortions, crap motor skills and all in all not as hyped up as it is on the internet... If they sell it at pharmacy's for ten bucks uncontrolled without any need for ID i don't thinks its a good recreational drug (in my opinion and those of my friends), yeah its a drug that alters your conscious state, but you can also do that by hyperventilating for several minutes and holding your breath...
I've tried many different drugs, but I'd have to say DXM is down there with BZP. Ketamine was fun, DXM wasn't... I really don't know people how can use DXM long term, I'd use it again as a cough suppressant in the recommended doses but not much else...