We used a HK L.U.C.A.S System, (There are a range of different ones, Google HK Audio for their website) for about 5 years, and would have no problem recomending them to anyone, The beaut is, Tho "strollin Johnny" never mentioned (no offence) The bass bin is on wheels. onto which the two sat's stack, giving you a neat bundle to push out the door, It does require a knack to lift the bin into a saloon car boot, but hatch's or estates and so forth, no prob.
We seldom were stuck for output volume with the rig, but when we were, we were lucky to be able to borrow a second L.U.C.A.S, as the systems can be linked, giving you 2 bins, 4 sat's & double the output, Mind you we did borrow the 2nd rig, not actually buy it! This was only required, say at large, noisy hotel functions and so fouth.
I wont harp on about the tech of HK systems, their site (very good too) can do that for you, But i will say, it is quick to set up, easy to transport, Good range for the sound due to the crossover in the bin, And overall, 100% reliable. Never had one problem with the rig.

Incidentely, we sold the rig without any problem, only because we had a good year, and decided to lash out on a new rig, and now gig with two Mackie SRM450's. 2 powered speakers, no bin, as what little bass comes from an acc guitar, button accordion and Bodhran, is well handled by these.

P.S
Had them shipped in from Thomann Music in germany, and saved a fortune doing so!