Bob, nothing wrong with the Pulsos, they have been the workhorses of the 80ties, they just have an outdated electrical design. Honestly try to get hands on a GrafitA pack, its features (color consistency and short flash duration via IGBT cut-off) are close to the scoro and they pop up at very reasonable prices meanwhile.
Trigger delay has not really been a problem for us as we usually freeze motion through flash duration and don't have too much ambient light in studio anyway.
BTW, one thing to also keep in mind when using short shutter speeds is the fact that the flash duration of a studio pack is usually much longer (e.g. a 3200J pack in a classical design emits light in the range of 1/80 - 1/200s) so you cut off (and reduce) light with your shutter.
Cheers!