[blackguardx]

I think your Altium experience might be a little stale. Microvias in Altium are really easy since at least three or four years ago. It also supports basic SPICE simulation, but I've never used it. I use external SPICE and RF tools for most of my simulation needs. I've had good success designing RF boards in Altium and the only reason I would want to use Mentor Graphics would be if I had some massive digital design with high speed buses everywhere. You get what you pay for, but Altium is a solid tool at a decent price.

[reportingsjr]

KiCad also has support for microvias and blind/buried vias in this release. There are a few high speed design tools (trace length tuning and differential pair routing) that were added and I expect more RF support will come in the next release or two.