Watch the Profoto versus Xplor 600 video test and comparison on YouTube here:
You will see that the Xplor is close to, or better than, the Profoto unit, and at a 75% lower price point per unit. But back to the entire idea of a battery-powered, TTL-capable, HSS-capable flash unit; as Tirediron mentioned, neither batteries, nor HSS flash capbility, are "needed" for much studio flash work. Battery power can be provided by sine wave inverters for stuff that normally runs off of AC wall electricity. Is high speed synch necessary? For many people, no it is not, but it does offer shooting capabilities that ARE very nice to have, and it gives you better freedom out of doors, for sure.
Studio flash equipment/monolights/power packs and heads: this is a category where the manufacturers, except for Paul C. Buff, do very little marketing, and do not have a lot of good informatioin easily available. Some of the companies have been in business for many years, but sell mostly by word of mouth, or by "reputation". Speedotron, Norman, Dynalite, Profoto, Paul C. Buff, Elinchrom, Bowens, Broncolor,Photogenic are the big nine,old-line companies I know of.
The real issue is the "TTL" issue, and I honestly think that is for noobs...it's a way to sell $2,100 lights to noobs who have never used professional-power-level flash units.This level of flash gear is NOT about "TTL" exposure control. HSS is more useful than TTL ever will be, but the two features/capabilities have now been linked in some high-cost products.
A person needs to know what his use strategy is going to be when he buys into a powerful flash system; if it is a studio-oriented system, then HSS is not that big of a value, but for a system designed mostly for outdoor, location work in daylight, I can see the value of HSS capability, but not so much the value of TTL.