For what it is worth here is where I am at on my 990
1) It is buggy, particurally in the bass management.
2) They are working on it and will come out with a software update eventually.
3) If you set the unit up so that it doesn't activate the bugs, it soulds fantastic. (ie. Set the fronts to small with a low crossover and use manual calibration with an external meeter, particurally if you have a Sunfire sub)