For the yll 2.0 and the Sim engine, I most commonly use 60W and 50s, but that's with Molicel P30B batteries. If you're using the stock Wand batteries in the 2.0, they are underpowered for 60W settings. If I recall, 45W is the highest you can go with the stock Wand batteries in the 2.0, likely because they are only 20A where the P30Bs are 30A. I haven't used boost mode, so I can't comment there, but I can tell you that the Sim engine best likes to be heated a bit more slowly than what the boost mode is probably offering.
The Sim with the Wand is fantastic. Insert the engine with the top fin aligned with the top rim of the Wand (this will be 1 or 2mm deeper than what the 2.0 can do). From there, anywhere from 350-450F is fantastic (ignore the clicks, just let it roll until timeout). The closer to 450, the bigger the clouds will be, but don't sleep on that 350, that's where the terps really come alive - tons of flavor. I usually stick to 425 until timeout unless I want big flavor - that's the sweet spot for me. From what I hear, the DV insert that comes with the Wand will work, but you may need to increase the temp to accommodate for the DV insert because it will absorb some heat.
I'm hoping that getting the 3.0 isn't a waste of money, even though I used the coupon. It would be nice to replace my 2.0 with something that can handle some heavier lifting when my Wand is dialed in for other devices (Tempest 2 wand adapter is always attached). I wish there was some public information on estimated timing of release. It's kind of annoying that there isn't and it's making me feel like this may be an unwise purchase until that information is available.