Never heard of a "Darcy". We have a "Dancy", though. Actually this is a weird tree. We bought it and a Pumelo grapefruit a long while back and just stuck the pots between two buildings and pretty much forgot about them. They are still there, with the pots ringing the trunks. Never bother watering or feeding them. The pumelo has never produced fruit, but the Dancy produces every year. Strange thing about the Dancy is that the first several years it produced beautiful looking tangerines, but oh man were they BITTER! A couple of years ago we were talking about cutting it down and digging out the stump to put in a better tasting tangerine, and I guess it heard us. The fruits became 100% better the following year and have been that way ever since. We sure didn't do anything to change it.
We have a bunch of Changsha tangerines (which up till a few minutes ago I thought were called "Changshi") that do really well here. We have a bunch of them growing from seed, and this variety grows true from seed. Most of the plants just started from seeds we spit out while walking around the property eating the tangerines. Connie has a whole pile of them in pots now out behind the garage. They seem to take a LONG time to bear fruit when grown from seed, though.
Also some Satsumas, but most are rather small still.
Our absolute favorite tangerine is the Ponkan. Best tasting, by far of any of the varieties we have tried.
Connie likes lemons so she has a couple Meyer's and Ponderosas. She's also propagating quite a few of them from seed now.