I have X3 running, and am quite happy with it.  I don't necessarily need the new features, but 149 clams (on sale) seems reasonable.  My main concern, as with many of the forum folks is stability uber alles.   So, in terms of stability, how do you folks find the latest version(s) when compared with x3?
Thanks!

For me stability has seen continuous improvement with every update. YMMV.

It's been great for me. Moreover, more stuff gets fixed every month, and if an update does break something you use, it's easy to roll back until they fix it. Which to date has been handled very well. There were some bugs in the E update that got fixed in a mid-month update before the new F update.

Great stability here.

If you're happy with X3's stability that indicates a strong possibility your system is SONAR-friendly, in which case the new version should work just fine. Overall there have been hundreds of fixes between X3 and SONAR 2015. Of course some are for features you may not use, but the sheer number will probably improve at least some of what you do.

Most stable version ever (on my system(s))

I'm the same. Stable as ever. Oh, and Sonar too. Must get sleep. Turn PC off.

Like driving a ferrari! Rock solid and the latency has gotten lower and lower since X2.

Why would we stable a version? It should be allowed to run fffrrreeeeeeeeee.

I'm gonna be a dill and say overall with the versions of Platinum I've actually installed (Braintree and Dorchester) that there has been a SLIGHT bit more of lagginess/glitchiness compared to the very last release of X3 BUT the new features and bug fixes MORE than make up for that... and I cannot stress this enough... VERY slight notch down in performance.
 
By that I mean Platinum makes the computator shiny light thing seem to "think" a little longer than it used to... and we are talking seconds and milliseconds here. Not anything really noticeable unless you are a hyper aware spazzoid like me.
 
Those seconds I am losing have been far more than made up with by some very specific bug fixes and enhancements though that make my personal workflow much easier.
 
Essentially Platinum is X3 Producer but better... but a little more self conscious and shy. This new update though may solve that bit of lag/quirkiness (and perhaps Everett would have as well which I also did not install).
 
Cheers.
 
For $149... do eeeeeet!