Comparing the Acute2R 1200 with the Ranger RX is like comparing apples and oranges. The Acute 2R pack is AC powered. The Ranger RX is battery powered. The AC version of the RX pack would be one of the Digital RX and AS packs. Profoto also has battery powered packs in the Acute series but they only go up to 600 Ws (they also have the Pro B series that go up to 1200 Ws but cost an arm and a leg).
It had been a while but I used a few 7B packs last week and while Profoto sure is great gear, I don't like it enough to warrant the price difference when compared to a Ranger RX pack.
Can someone please design a 1200ish Ws battery kit with Profoto mount, LED modelling light, a dial for power (like Profoto has it, instead of Elinchrom-like buttons) but with a display of the awesome Elinchrom-like fstops that we are used to? Thanks!