Despite the Strobist propaganda
Despite the strobist propaganda, if you are shooting with A/C current available - even some of the el-cheapo studio strobes beat the pants off trying to turn hotshoe flashes into pseudo-studio strobes.
Studio type strobes are set up to be used on a light stand and need no extra adapters
Studio type strobes don't need adapters to fit light modifiers and many times will do a much beter job. This is especially true when using a softbox. A studio strobe with a removable reflector will do a much better job that trying to diffuse a the light of a hotshoe flash that has already been concentrated by the reflector of that flash.
Studio type strobes will have built-in optical slaves
Studio type strobes are most often more powerful than the hotshoe types
Studio type strobes are powered by A/C, not by anemic AA batteries. Recycle time will stay the same, not increase as the batteries are drained.
Studio type strobes can be a LOT less expensive than buying Canon 550ex, 580ex, 430ex or 420ex strobes and then having to spend additional money to modify them so that they can limp along pretending to be studio strobes. They are even les expensive than buying a 383 and trying to equip it as a studio light.
Adorama's Flashpoint Monolights run $130 for 150 WS and $200 for 300 WS models...
FINALLY AND MOST IMPORTANT: Studio type strobes are equipped with modeling lights.
Sure, you can get decent imagery with hot shoe flashes, I have a pair. However I use them for their intended purpose. I could haul gravel in a Ford Focus by covering the back seat with plastic but, that isn't the way I would go.