OK, so I've had my Rose 3 for a while now. I've been running my normal build in it, which is .4mm NiFe48 with a TCR of 405, 9 wraps spaced 2mm coil, at 230 degrees at 22W on my Dicodes. The flavour is much more pronounced that any of the 17 atties I possess, and so I'm so very much impressed. It's lovely used as DL, but slighty less so as MTL.
There are some mildy annoying aspects of it though. I've seen what happens to a Rose 3 when the mod it is attached to accidentally gets dropped. It wasnt a big drop, but it landed on it's drip tip. The chimney section was pushed down a few threads and ended up cross-threaded and jammed. Turning it only forced the wick collar section it was threaded onto to spin, because although the collar secrtion is supposedly locked by the bottom section being screwed tight, it will actually move if you apply enough force (i.e the force required to unscrew a cross-threaded section). You can't lift that collar section out, it has to be removed downwards, but the chimney section won't move down, it can only be removed upwards. Hence, you have an unrecoverable situation. Don't drop your Rose 3, it's not likely to be a good outcome.
The AFC is too loose for me. The AFC loves to move downwards when the thing is apart for cleaning, and the wire drops out. Luckily I found the wire.
If the top fill section is screwed down too hard, it's all too easy to accidentally unscrew the tank. It would probably be better knurled, even though I'm not fond of knurling because it ruins the aesthetics.
It's sometimes really difficult to unscrew the sections for cleaning. You probably need vape grips.
The plastic used in the tank section is of a type that is extremely succeptable to tank crackers. Don't think you will get away with it.
When you unscrew the Rose 3 from a device where the mod is wider than the Rose, you find that the bottom section is very slippy, it's so smooth. I would have preferred knurling here. Because the bottom section is so narrow, you inevitably end up merely turning the AFC. If you unscrew the Rose 3 from higher up, and the atty is attached very tightly to the mod, you end up just unscrewing the tank section.
On a more positive note, the 510 connection is of a type that is wonderful for TC. It will never move. I have atties like the Squape and the Taifuns that are absolutely useless for TC, because the adjustable 510 moves every time you unscrew and reattach the atty, which means that the base cold resistance changes on refill. Another reason why I love the top fill on the Rose 3.
So to summarise, the Rose 3 is a fabulous atomiser, but you have to be SO careful with it. But despite everything, it is becoming my favourite atty!