http://www.bretdossphotography.com/If you look in the Fashion gallery, the first 14 shots are with Einsteins.
In the Portrait/Headshot gallery, 1 thru 6, 10, 14
In the Recent Work gallery, 2 thru 7, 10 thru 21, and 36 thru 44
The modifiers vary from strip boxes with egg crates, white beauty dish with grid, 64 white PLM, 86 silver PLM, 86 silver PLM with white cover.
In general, studio style shots other than those noted above were shot with combinations of AB400, 800, 1600 (seldom the 1600) with softboxes/grids/reflectors/umbrellas.
If you are trying to decide between the 1600 and the Einstein, I would say it is a no-contest choice for the Einstein--higher end, better featured, and covers the output power range not only of the 1600, but also the 800 & 400. So you can use the Einstein for low power, close-in, wide aperture work, and that is problematic with the 1600. The einstein is just much more versatile, has better specs.
Even if you need to save up a bit longer to get an Einstein, it is worth it, I think.