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I used to own a Roland FP2 but have now upgraded to the Roland FP4. The Roland FP2 was my first ever stage piano and, I can tell you, I was not disappointed!
The piano is very transportable - I could easily fit it into the front seat of any car (just put one end in the foot well beneath the glove box and have the other on the head rest of the passenger seat!) or, if necessary, could carry it short distances (like 10 minutes up the road to the University Student's Union). The piano also sounds great - a very bright, crystal clear grand piano tone. There are at least 250 other voices in the machine too - including some classy double bass, some surprisingly neat sounding organs and full string sections for those lovely slow, ballad songs!
You may wonder why I upgraded to the FP4. Well, sadly the FP2 has no permanent internal memory. You can record up to 3 tracks in real time (e.g. bass, drums and backing keyboard) but once you switch off the power, all your work is gone. Mentioning the drums actually, the drums on the FP2 are great. I used them all the time.
The touch of the keyboard is quite soft, but the weighted keys have enough behind them to keep your fingers from getting lazy. I'd definitely recommend playing the keyboard to judge for yourself. I personally am very fond of a more delicate touch, but I know some pianist will prefer a heavy finger work out!
It was the flash memory of the FP4 that persuaded me to upgrade. As a keyboardist, rather than a pianist, I was quite keen to use all the whacky sounds that come with the FP series. Still, the FP3 has a lush piano tone, is very transportable and excellent value for money. I bought mine for £700 a few years ago - you should be able to pick one up for around £500 these days.