Since butalbital was mentioned.. i find it moderately-to-particularly recreational.. as long as you don't take the same dosage every day. I've had experience w/ carisoprodol, butalbital, benzodiazepines (clonazepam, diazepam, & alprazolam), meprobamate, & phenobarbital... in order of most recreational to least recreational, butalbital obviously being 2nd; i find it much more recreational than any benzodiazepines. But, i stick w/ carisoprodol as number one... I know some don't like it; but it was the most euphoric of the aforementioned GABAergics, for me at least.
EDIT: I For reference- am also prescribed 2400ng of gabapentin per day... which seems to both potentiate the effects of butalbital and concurrently reduce my "feeling of need" for it... odd, i know? But, then again, gabapentin is thought to be an anti-addictive agent? But who knows if that was a result of Parke-Davis & their off label (and illegal) promotion of the medication??