I have the ViaAqua750 which I'm pretty sure is now the CF1200 Aqua One (rebranded).
Good points: goes perfectly, zero noise, has gone for about 3 years straight, straight forward and easy to use, huge biological capacity
Not so good points: average flow rate (is a heavily planted tank though), can be hard to 'get going', or prime, don't seem to be able to get replacement parts..I broke the intake piece of plastic, luckily the ehiem piece fits
Hope this helps