1.) Agarwood Assam's Hastakshar Kalakassi, I love Hindi genre and Hindi type oils, have smelled, owned, and extensively worn many. Of them all, only HK, Ensar's Assam Kinam, Taha's Lalitya and a generous sample of Zak's Kanglei remain. I conclude that HK is either underrated or low yield and only a few people have it. An oil @ ~$120/3gms that rivals oils costing upwards of >$1000 is not an easy task.
2.) AgarAura's Hansei, I've worn several Vietnamese oils such as EO's Kinam Rouge, Kyara LTD, Kyara LTD v2, and Nha Trang LTD; IMO Hansei easily parallels or surpasses those. Considering price, it does so at ~$800, whereas the others are anywhere from $1250-$4500, if not more.
3.) Ensar Oud's Sultan Sufyan, an oil I don't see much mention of and at the time of release, IIRC, was the least expensive PNG Sultan series oil. IMO it is one of his best oils along with Port Moresby.