6apb is very hard to synth. It is very possible most people are getting 5IAI and some other rc's. Had some that contained I think: 5IAI (not very stimulating or euphoric in itself), MPA (lasts about 4-6 hours, stimulating and 0 euphoria) & AMT (fuck yes AMT! If it was not so sedating I'd be an addict! A cross between LSD and MDMA minus stimulation), fuck that was heavy!! NO 6APB. Had others that contained 6APB and it is very similar to MDA, not as euphoric and active at about 60mg (well thats how much I had.) Find about 100mg is very similar to MDA and is the most I have had in 1 dose. I have found it's difficult to determine what you are getting and when you find the goods you tend to stick to that. Dont know about oz as I'm in UK at the moment but I'd guess 5 IAI. Add some meth and 5 IAI is similar to MDA just lower euphoria (ie occasional grin), mild psychedelic effect and damn speedy! There are some dodgy products getting around so you gotta be careful ie AMT takes 3 hous to kick in and is quite neurotoxic (from memory) at high doses, so you may take to much and get fucked up and very sick. BTW AMT is illegal in Oz. A good acid test, so to speak, is to find out if the product is Indian or Chinese. Indian product is what you want most of the time it is the genuine article, Chinese is cheaper and could be any random RC or contain almost any contaminants. 6-APDB could be the "good" 6APB i've had, to fucking hard to tell. 6APB and 6APDB should react to a regent test and their is a you tube vid with the various regent test results for these chems. Good luck stay safe and 6APB is ment to be non-neurotoxic (discovered in the 90's by a research team looking into non-neurotoxic MDMA analouges) so getting sick from a few doses means it's not 6APB (or a fucked up batch). I would not feind on this stuff however cause it lasts a while and maybe 2 doses 60mg for a night out, 3 max. Good luck and stay safe. BTW it's bloody expensive for the goods, not as much as a dodgy ozzie pill but still not cheap