The BCR works fine with the 8P (and 3P with the mod). Been using mine with them for years.
8P is not an 'only' synth, especially if you want hands on fun and some proper analog goodness but it has it's own place and as said above can do quite a lot of things, it excells at pads and can do decent smooth leads etc (mainly due to it's features like solo/portamento more than it's intrinsic sound quality - it's no moog!).
I also love using it as my main controller for Pianos (TG500/VSTs etc) as it just feels better for that than anything else I've owned, obviously I'm talking about a bonus here, if you want proper piano action you buy a proper weighted piano controller, or a piano.
Aftertouch isn't too hard to fix if you are good with a screwdriver, mine works perfectly now, the 'elephant touch' jokes are completely wrong ONCE you clean it (and check the resistor is OK), I merely cleaned mine and it's very easy to trigger. Obviously they were already starting to oxidize early on in life so rumor got around that the A-touch was more like after-punch but as I said I'm very happy with the AT on mine, best AT I have in fact. not sure about all this 'hooking up midi' to test it, just turn the synth on, select a preset string patch (soundtrack!) and turn A-touch on (brightness/vibrator) play a chord then press harder to modulate etc... you may find it's not even across the keys but it's not a major problem, if you don't know how to test you probably won't use it anyway, it's not like dodgy velocity.
So cheap it's a no brainer to at least buy n try, sell it on if you don't like it.