Picky question about Garageband instruments.

This may seem a bit picky but as a musician it is great for sounds on garageband to sound as close to the real instrument as possible. I was playing with the 'piano' sounds in garageband yesterday and after playing my proper piano earlier, I realsied how unrealsitic the sound is. I know there is 'Logic' but is there a way to improve the sound quality and realism of instruments and sounds on garageband?

Thanks