Profoto's are great, but they only just introduced a version (B4) with Lithium battery, and you'll pay a S___ ton of money for it. My personal favorite at the moment are the Hensel 1200L Porty's. They're small, light as hell, have quite a bit of control over your A & B channels, and are super well made products. Price point is right, and the cases and pouches that come with their products are really good quality and handy too.
Right now though, I'm really excited about the new Broncolor Move battery pack that was announced at Photokina. I have lots of experience with their Scoro packs, and it'll be amazing to have the same features available in a battery pack.
If you really aren't finding you have enough power at 1200 W/S, then it may come down to a bi-tube and pair of packs. You did say money was no issue after all...