For what you plan on doing with it, I can strongly recommend an ATR-30.
I'm leaning towards that direction. I was reading the spec sheets on the Palstar AT4K & AT5K today and they're all over the place regarding what continuous power they can run.
Both of them use the same 10ga roller inductor, which I really don't feel is that much of an upgrade over the AT2K with its 12ga inductor.
My only concern with the MFJ aside from all the parts arriving in VK first go (if I have to fix any whoopsies thats ok), is how well the roller inductor works.
I've heard it doesn't feel as nice as the Palstars to use, but at the end of the day its Edge Wound and considerably bigger than the inductors in ANY of the Palstars.
And yeah, its really cheap too.
I'll put down 1 vote for the ATR-30.