its not the beloved gear. i can replace a g system and a mark 4 if i don't like the axe...i wont hold it against you plus i highly doubt that i would regret it. after all what really got me to thinking about the axe believe it or not is pod farm 2.
In that case, let me get on my soapbox.
If you like the Pod, you'll positively flip over the Axe-FX. It equals, and in most cases exceeds, anything the TC Electronic can do, with a flexibility that's off the map. It can do a convincing Mark IV, along with a slew of other amps.
its the pedal board.....although i can keep the board itself........it is just so beautiful with the g system and works so well...ITS 64 FREAKIN POUNDS JUST MY BOARD ALONE!
That is a beautiful board setup. I can see why you like it. But, man, 64 lbs.? When I go with my Ultra and a single powered wedge, my whole rig weighs less than that. A MIDI pedalboard and a couple of expression pedals would cut down that 64 lbs. considerably.
does the axe have some controllable feedback?
Yes, as much as a real amp. Extra-sustain feedback, squealing feedback, whatever you want. What you get depends on room volume and proximity to the speaker, just like a real amp.
and lastly i still dont have the answer to this one. how do i power the axe?
If you need gig volume, studio monitors won't cut it (they will be fine, however, for anything quieter). I'm not the best person to ask for comparisons, because I've only ever used a pair of Electro-Voice SxA-100 powered wedges, which I love. Either of the options you've listed will work fine. I've heard that a single powered Atomic may give insufficient volume, but two will be enough. I have no direct experience with that, though.
Another option you might consider is a pair of Atomic passive speakers, or another brand of passive full-range speaker. You might be quite happy with how they sound with your MosValve.