I voted JWH-018 but I've only tried that and one trial of dronabinol that left me unimpressed. My friend who's tried both -018 and -073 quite a bit prefers -018 but prefers a mix of the two to either of them on its own.
I don't find -018 all that intense or anxiety-provoking, though. Maybe that's because I mostly take it orally, and when I smoke it's usually just a tiny sprinkle with some weed. The pseudo-visuals I get from weed come out at lower doses, it seems, with -018 - not visual distortions per se, just vivid imaginary images and 'eyes playing tricks on me' from the corner of my vision. I find that on its own, it produces the general effects of being stoned, but weed gives me a unique sensation that I can only describe as 'pressure' in the head, centered between the eyes, but it's a pleasant sensation and that makes it sound more like a headache...
At any rate, some of those specific queues I use to gauge how high I am and auto-titrate don't seem to be there. It's not close enough to feel just like smoking or be *as good* as the real thing, but it's good enough that if I'm out/low on weed or for whatever other reason need to go without ganja for a bit, an oral dose of -018 will satisfy my craving for being high enough that I won't be jonesing for a smoke like I normally would. Also, if I've taken a decent oral dose of -018, a single hit of high quality bud will bring out all those 'missing pieces' of the high for at least a couple hours.