Moment of Inspiration is nothing like wings. It is closer to Rhino and if you like modeling with arcs and curves it is nice. I find it befuddling but I am a poly guy like to box model everything.  But many people like it and since the original poser wants to do architectural stuff and knows programs like illustrator it might be for him. (also it is free for now)

Generally I use OBJ format and import it into my renderer and arrange thigns light them and then render. Ther eare other formats but now OBJ s the most universal and useful. Most progams have a proprietary format too some are used in more than one program but generally OBJ I find id most universal. 3DS is used a lot too but has problems with high poly counts. LWO is common to a number of programs but not nearly as universal.

My workflow I model and UV map in Wings and then export. The I import them into Messiah and apply textures arrange items light set up GI rig as needed and then render. Wings also has a very nice UV mapper which makes it even better I would say getting wings is a no brainer. Free and good and a good UV mapper to boot. I do my subdivision sufacing in Messiah so I only actually make the rough shape in Wings smooth in Messiah.

The wit of a misplaced ex-patriot.
I cheated on my metaphysics exam by looking into the soul of the person next to me.