Just thought I'd post something of a mini-review of this since I've not seen lots of info (just the odd thread) so thought any additional info / reviews might be worthwhile for somebody searching.
This is my first digital piano - although I have a real (albeit upright) piano I've had for some years. And I'm returning to regular piano playing after about 25 years absence from regularly playing. Prior to that, though, I played and had lessons (and took some exams) for 10 years.
I did a reasonable amount of research, although didn't in the end go to a real store and try any out - I would have done in normal circumstances, but as the numbers for the AP-245 were drying up, due to it being a limited run, I decided to splurge and bought it from the internet operation of a chain of musical stores here in the UK.
My initial interest was getting a digital piano - probably slab style - truly entry level, and I was probably going to go for a Casio CDP-120. I didn't have loads of money to spend on one, so budget was important, but really what was the main draw was being able to practice in silence, using headphones. I still intend using my real piano at times (although it does need tuning) - so with it being a secondary instrument, a lot of the normal things that are important when somebody is buying a digital piano, and it's their sole piano, weren't that significant. Budget, action, reasonable sound were.
Having seen adverts for the AP-245 and noting that it is in effect the same as the AP-250, but at a very reasonable price (£499 here in the UK), I was seriously considering it - spending a little more than I had originally planned, but it seemed a very decent return on that extra money. Nothing else at £500 seems to get near the AP-245 in terms of spec, so it seemed a sensible thing, given that was really above my initial budget of what I was going to spend, and the type of digital piano I was going to buy.
As I said earlier, as the availability numbers of the AP-245 seemed to be dwindling, I brought forward my purchase a little earlier than I'd planned, because I didn't want to miss out - and I'm glad I did.
It arrived on New Year's Eve, and I unboxed it and assembled it (by myself - it wasn't as hard as I'd thought it would be and assembling / joining the stand / cabinet to the keyboard section, is easily possible, signgle handedly, if you hav the keyboard section propped up vertically (back of it on the floor) and offer up the assembled stand and screw them together - then you can upright it as one unit) on New Year's Day. I've been delighted with it, from the moment I started playing it, the keyboard and action have just felt natural and as I'd expect (bearing in mind, I've only ever played real pianos - albeit mostly just uprights), the sound has been impressive, and easily powerful enough for the room it's in (volume set to about 2/3 for normal use with the speakers, ever-so-slightly turned down a bit when I play with headphones).
I like it's very simplistic look, and the colour, too - simple, understated, and elegant.
I've been delighted with my purchase (I purchase it as a bundle offer, although it was just with a Stagg adjustable stool / bench - which added £20 (UK pounds) to the base price (£499 (UK pounds) - so £519 in total).
If the AP-245 hadn't been available, I'd have probably not gone for that sort of model (ie console digital piano), I'd have probably bought either the Casio CDP-120 or the equivalent Yamaha model. I'm glad I spent a little more and got what I have - although in fairness, I almost certainly wouldn't have spent as much as the AP-250, or the equivalent Yamaha.
I know models at this sort of point in the range, aren't necessarily what everybody raves about here, and had it been my sole piano, I would have had different priorities. I realise digital pianos at this price point are hardly aspirational, and normally have some compromises. For the AP-245 / AP-250, that mainly seems to be power output - as polyphony, features / spec, and keyboard action all seem to be very decent.
So my first experience of a digital piano has been very positive - I still intend on playing my real piano, too - although with my digital piano, I feel like I can play / practice whenever I want, so I'll probably just play my real piano when it's ideal in terms of not having to worry about the noise. And I really need to get it tuned!