i never got to finish my (highland thai) full moon as it took forever to even go into flowering and once it did, it immediately turned hermie on me and started spraying the shit out of everything in my garden so i cut it down early. at that point, all i got was a wicked strong stoney buzz out of it, but i asked about it from someone who's finished it and got a confirmation that it IS indeed trippy. i would have loved to finish it because it's tutti fruity (aka juicy fruit) flavor is just sick! it gave me a woody every time i speed dried it's leaf in a frying pan after i pulled it from my room.
so far, the trippiest i've ever smoked and what i measure everything else against is mid 80s california grown columbian gold. that shit could get pretty darn close to the weak ass trip i had on SEVEN hits of acid i bet were soaked by my cousin & watered down. i wanted to have at least 3-4 trips out of it and not one lame one. good luck finding THAT in pure form though. i'll get back with a report on 75% gold from world of seeds by next summer hopefully.
for what i've personally tested indoors, high quality seeds' haze x skunk kicks much ass! i'm not a fan of that one's cigar wrapper with hints of ashtray flavor, but it's tolerable and the buzz is super potent & long lasting to the point it starts building up in your system leaving you with a mild permabuzz. it was lest visual & sensory enhancing than gold, but more potent, motivational & possibly even euphoric and definitely more psychoactive than the pure haze gram i was gifted and even the durban poison i was gifted back in the 90s, though that might have given me a trippier buzz if i didn't hate it's authentic black licorice flavor and get dry heaves off it.
back to haze skunks, TGA subcool's jack the ripper sounds like it might be better than HQS' version from what i've read and someone described sannies' much raved about killing fields as "talk to your dog trippy". THAT might be THE best strain for indoors, or at least pretty fucking good. a lot of breeders have haze (or thai) crossed with skunk #1 (or lemon or cheese phenos) that i bet compare well with HQS' version. like i said, nirvana's H19 skunk looked more IBL and might have been trippier.
a lot of "the best" trippy strains are getting extinct. afropips' lemony malawi gold was THE REAL DEAL from all of the reports i've read. just try finding pure vietnamese blackseed or cambodian too. i tried delta 9 labs' mekon haze (cambodian x cambodian) based on it's report in cannabible which made it sound like the trippiest strain ever, but got 0 out of 5 beans just like someone else here just as i got 0 out of 10 of my vancouver island seedbank burmese which is another hard to find strain these days.
i really want to test rokerij's amnesia haze as it's super silver haze, which is much trippier than skunk #1 which has no real psychoactivity beyond euphoria, crossed with a cambodian that should in theory be trippier than haze which hasn't lived up to it's psychoactive rep in anything i've tested so far.
i've seen a lot of raves for ace seeds, and it wouldn't surprise me if their 16-24 week old time haze is much better than most of the hazes out there as it takes so much longer and sounds more IBL. if you want the ultimate in trippy, you're going to need to start looking at strains that take at least 12 weeks to finish. alot of the faster finishing & more compact strains like LSD advertised as trippy don't live up to their hype.
if you can give it the space, light & attention it needs and are ready to deal with pulling hermies, sativa seeds' full moon, as mentioned is a good bet with a delicious flavor. that's where blueberry & hazes that are grapey get their flavors from, but SS' is undiluted.
as to NL5 hazes, the author of cannabible really liked dr atomic's version, but i'd expect his purer metal haze to be even better