[MrMid]

I have the WD19TB and it is great. I've never had problems with it, though Dell updates its firmware frequently, so it seems they are still tuning it.

[bionade24]

I do have it, too and I have to say despite it's being a fucking computer on its own it works astonishingly well under Linux, especially compared to the docking stations I had before. Feels like they really cared about their Linux support. Tested with both my XPS 9310 and my Precision 7530.