Studio Monolight Strobe Systems:
For studio use, I found that the problem is typically dialing down a given strobe's output to be low enough--most are too bright! The Paul C. Buff (PCB), Einstein E640 monolights are among the few monolights available with both very short flash duration (for freezing motion), and extremely wide power range, down to a minimum of only 4Ws. The EGBT-based system also supplies extremely consistent color temperature over its entire power range. The Paul C. Buff CyberSync remote control/RF triggering system is also extremely well-suited to studio set-ups, since it offers lots of memory for different set-ups, in addition to normal, remote-power control, and RF-triggering, over each strobe:
1. Paul C. Buff Einstein E640 640Ws AC monolight ($499)
2. CyberCommander hot-shoe mount--buy one of these and put it on your camera ($179)
3. CyberSync CSXCV transceiver for E640--buy one for each E640 ($29)
I plan to build a studio with as many E640s as I can afford. Also, the PCB line of modifiers offers everything from softboxes, strip boxes, fabric eggcrates, and parabolic umbrellas, all at a fraction of the price of competitors' models.
Note that when choosing a studio head brand, you're generally limited to that particular brand of modifiers [*see below]. This can be an important part of the decision on which brand of strobes you decide to go with--the available modifiers to fit your specific brand. Since PCB offers such a wide array of modifiers, all extremely affordable, going with all E640s can be a good way to go. But some prefer specific modifiers from other manufacturers, which aren't readily adaptable to other brands of strobe heads. Elinchrom is a good example of that--people love Elinchrom softboxes, but they're very pricey, and kind of only fit on Elinchrom heads. PCB does make an adapter for their PLM (parabolic light modifier) to put a Buff PLM onto an Elinchrom head, but not the other way around.
* [Photoflex, Chimera, and Westcott all make modifiers to fit most makes; however, all are different, and none are directly compatible with one another (for example, you can't put an Elinchrom softbox on a Dynalite head, or a Paul C. Buff modifier on a Speedotron head). A few adapter rings are available for mating certain brands of modifiers with others' strobe heads, but not all options are available. Each strobe manufacturer has engineered a slightly different way of mechanically mounting modifiers to their heads, so therein lies the crux of the problem.]