Before purchase I would recommend to download the Demo.
Lacking parts
I. real-time chord change. Still haven't tried it yet.
ii. The workaround needed to understand the required/suggested patches [where I am using TTS-1]
iii. I haven't find the option to change the style while its playing.
iv. We have to define the entire accompaniment before, if we want record the entire song at one go.
v. I haven't seen the articulations, the arranger section does with the super-articulated voices available on PSRs/Tyros.
But overall my feeling is:
I. I am using Yamaha styles
ii. I haven't brought any of the arranger keyboards
iii. I can determine the chords I will be using in my song [may be there will be some changes]
iv. Initially I look for an overall arrangements to understand how the song will flow and to create the prelude/interlude music.
v. Accompaniment editing is not that difficult, obviously not having interface like Jammer/BIAB
vi. Not sure about the styles for BK/PA series.
vii. Much affordable than any good PSR arranger keyboard.
viii. What I am recording is MIDI+Audio. So I can very well manipulate them according to my wish.
I need to spent some more time to get more workaround to have a template saved to minimize the setting up time.
Regards
Snehankur