I only have 2 sb80’s to work with which do the job most of the time. The only downside to them is there slow recycle time on full output which drains the power quite fast on test shots for exposure. they can struggle to overcome bright sunlight on max output too. Some guys that shoot for a magazine I contribute to have unbelieveable set ups that I’ll never be able to afford, then again they are getting paid for what they are doing.
Check http://www.qualiaphoto.com It’s a website by a photogrpaher called Rob Dolecki. His kit is crazy, full digital set up and full medium format setup in one giant backapck that literally starts above his neck and ends somewhere near his knees.
Check out http://www.rickyadamphoto.com and http://www.36exposed.com if you have time, both worth checking out.