simply on a which is better for using recreationally kind of comparison... well, that's definitely an easy one (of course, please remember that my opinions are based upon my experiences over the years with both drugs, and our bodies could very likely be as dissimilar as... uhh...ok.. how about a midget horse on crack and shaquille o'neal... i know that sucked, i'm sorry. but you get the point.)
i've always found gabapentin to be totally useless recreationally. however, 400+ mg of pregabalin, esp. when combined with low dose opioids and/or soma or - if you really want to swing for the fences - diazepam or (if you don't mind going back for more pills) alprazolam. i've found that lyrica tends to get way more relaxing/enjoyable, the higher the dose (obviously, i'm not encouraging anyone to go nuts here... only take what you know you can handle, and - ALWAYS - if you are trying something you are unfamiliar with, don't freakin do it all alone.