ok, sorry for digging up this blast from the past, but i just wanted to add my opinion.
although many of you claim to disagree, it seems those that do, really haven't tried more than 2 different brands....or at least you only mention using that many...after having had the luxury of trying a few different brands of SEALED vials, often side by side, in my experience, there is definitly a difference between brands. and all my experiences and opinions are also shared by my tripping partner..all these describe IM administration.
Ttokyo/ketamina was the absolute worst ever..very warbly experince, no recollection whatsover...complete waste of time...warbled out for a very long time after...
Ketaset... very clean...good recollection...sorta 'generic' feeling i suppose..
Ketamex(or vet?)[mexican white box/green bull] the best ever...beutiful trip...great recollection...just dandy...definite fave...
Ketaphorte...less recollection than the last too, but still good...nice trip..7 stars out of ten...and ya can't complain when you got 10 vial for free!...that was a happy birthday to me..
One more sealed one i can't remember the name though..i believe it was human grade....felt along the lines of ketaset...
on top of this i have had 'numerous' powders which i have mixed into solutions over the years, and they all DEFINITLY provided different subjective experiences at times...
when i do k, mostly i binge for a few daze, so i get a good idea of a certain brand, or i am able to compare them side by side...i do believe it's variation in the ratios of the R and S insomer that account for these descrepincies, but surely subjective experience plays a role...i definitly notice after binging on 'any' brand of k for a while (weeks, months, with breaks of course), recollection get's real bad...there's a point of no return...so all of these opinions are based on some of my first encounters with them..and as i said my tripping partner agrees with me on these differences...
i also figure many of them can change with time as a batch of one brand made in 2001 , might be different from same brand in 2004..who knowz....
just wanted to give my opinion since many seemed to claim otherwise... peace..