Right now I would say go for it.
About the Boomy bass, yes it does have that kind of effect if the room acoustics are not set right. But that is the case with any high powered bass system. There is also the issue that you need considerable volume to get the bass to sound right IN CERTAIN SONGS. Its because its a 10 inch sub that it needs a certain amount of loudness to sound right. The rule of thumb, the louder the volume, the tighter the bass....
Their latest update seems to be the Z5450 which has the rear satellites as wireless. It seems quite underpowered as well as costly. I think this is a good buy. Go for it...