K and MXE are pretty much able to be added to any recreational drug IMO. K and MXE together isn't bad either. 25c NB and K not to shabby, loads of 2cx type tracer visuals and the connecting the dots type thought process K induces. K and all NB's are good for that matter better than just NB. 2cx's and MXE or K are pretty fun or intense depending on the 2cx in question. 2cb + MXE/K = fun, 2ce + K,MXE = intense. Tryptamines of all sorts are enhanced with K and MXE. Notable exceptions 5 meo-mipt/dipt not fun by themselves and never tried with K,MXE and same goes for 4 aco/ho Dpt/dipt. I don't know why but 4 aco/ho dipt and dpt don't seem to agree with me, like 5 meo-mipt/dipt the body load/heart palpitations and general discomfort I experienced made me realize some substances are just not for some individuals.
Smoking weed (I've since quit weed and cigarette's) was not bad on K/MXE, even some synthetic weed has been ok JWH 018, AM 2001, a couple newer ones. With the addition of a benzo or two, weed and K/ MXE it can be quite interesting although probably more than a little unsafe. Meth and K/MXE nice. Never tried coke and K/MXE so can't comment. MPA and K/MXE... well I think the combo with K/MXE makes this turd of a drug shine up a little more but not a great deal. 5/6 apb also nice as long as your careful with the dosages. Morphine Sulfate and Oxycontin plus K/MXE also nice but not something I've done more than once or twice.
Best drug combo?? Well I've been enjoying opiates and psychedelic's of late 4 aco-dmt/mipt, 4 ho mipt/met with oxycontin or morphine sulfate. 2cb and MXE. 2cb and a tiny bit of meth. 2cb, meth and K/MXE with a little diazepam or similar. Meth with benzo's, low dose at the start to make things less edgy and a few for sleep on the comedown not really a fantastic combo but meth sucks without them especially the fucking come down. Amphetamine sulfate and 2ci with a little diazepam fucking great combo!! So many, so hard to pick one!! Probably all I've listed are dangerous so I'm not endorsing or advising these combo's but for some reason I really enjoy them. One I don't mind but have not listed as it's not one I do very often at all but 2cb, MDMA, meth, benzo, opiate, MXE/K (twice in the last 12 months)... probably rather unsafe as well but it's fairly lowish doses of most of the drugs mentioned and the MXE/opiates are at the tail end (more common but still infrequent perhaps 4 times in the last 12 months: 2cb, meth, benzo, MDMA, MXE/K).
Drugs I'd NEVER combo include pcp, 3 meo pcp. In addition those tryptamines mentioned that I do not react well to, just me probably but can't combo them if I'm not willing to consume them ever again, same with heroin. PCP and 3 meo pcp are unique enough on their own and should be dosed responsibly as they are fucking powerful substances... Fuck I have a polysubstance abuse problem.