Ian, here is where we have to disagree...again....

"Arranger" keyboards have the stigma of "home" entertainment...in the past.....No more...Since they are well known and used by Pros nowadays...with quality sounds and features...

Roland G70 as an example...76 great action keys, Mic and harmonizer (first class), separate out puts (What home users need this?)..Steel chassis, and durable buttons...This unit says "Professional" all over it

The counter offerings from General Music (Genesys Pro), Ketron SD1, Korgs PA2x and 3X 76 models...All these have the quality built and features that Pro use demands..I will suggest they are Pro models and not "home" keyboards....

Make them cheap, light plastic , lower quality knobs and screens and add speakers.....now you have a "home keyboard"..

Enter the Korg models with speakers including the PA800, the Yamaha PSR s910, and sorry to say the Tyros4 is right in there too...Roland you can look at the Prelude, E-50/60 and yes the E80....Doesn't mean any of them could not work on the gig...but the quality design and features dictate what models are designed as Pro models and what are home models...