I have to say my LF jr has not been buggy at all. I've had zero problems with it. The LF forum took care of my one question, which was something that isn't even a question anymore due to the firmware upgrades. Given the number of firmware upgrades since I got mine a few months ago, I think its quite unfair to call it unsupported.
Want to see "unsupported", you should try some of the soundcards I've had... 1-2 years, yes years, behind on OS patches!!!
To be clear, I'm not doing anything crazy, just changing Axe presets and then turning individual FX on and off but its never been a problem in my Axe rig.
I'll be adding a Mission Pedal for wah stuff this weekend. I'll let people know how that goes.
The phantom power works well and I like that.
I think its a big overstatement to call it "buggy" as a platform personally, but I'm not launching rockets with it, and some people here really do stuff I don't even understand, so maybe there are other examples. I'll vouch for the basics.
-P