I've had this about a week so time for a review! I also picked up the GMO and will point to that review for overall impressions, the cart hardware, value etc, here I will focus on differences to the GMO cart - the cultivar.
I was skeptical of this one - I've haven't been the biggest fan of slurricane in the past and reddit reviews mentioning it tasting like a urinal cake had me concerned - but I am pleased to report this is nothing short of fantastic!
It's much heavier than the GMO, considerably more sedative, and it has quickly become my 'wake up in pain emergency cart' and it is AMAZING at that job. Blunts the pain, calms me down, and sends me straight back to sleep. In fact I would say this cart alone has improved my quality of sleep immensely. I wake up on average 3-5 times a night, so being able to have a quick puff of this, calm the nerves, and get back to sleep in minutes, is truly a god send. I have tried this with other carts, and even though I find the sourdough relaxing, if I hit that in the night it wakes me up

So to have found a cart that is absolutely sedative, no two ways about it, is a god send. It seems more effective for pain relief than the GMO cart too, generally speaking. I find it very relaxing. Not to wax too lyrical, but waking up feeling like I have actually had some sleep is amazing and worth the £95/ml on it's own.
But then we come onto the flavours. It's deep, layered, and just what you would hope for from a premium hash rosin cart. Up front I get hit with a truck load of grapefruit and a touch of herbal (= urinal cake?), which fades to reveal layers of 'purple', berry, sorbet, slushy, and that unmistakable watery 'bubble/ice hash' taste. Proper WOW levels of
terpenes and complexity here.
Also worth mentioning as a heads up, the
terpenes on these rosin carts are so strong they REEK, even when not in use. I've had to buy a firedog smell proof pouch for them, which wasn't really a consideration with other carts at all.
Overall this gets a 10/10 from me it tastes amazing and is super effective.