Best bookcase speakers for classical music

I love to listen to all types of music, but primarily listen to classical, piano, and a variety of vocal music. What are the best bookcase speakers to consider/purchase -- without using a subwoofer. I have listened to ProAc Tablette 2000 Signature speakers and B&W Nautilus so far. I have a Nakamichi RE-10 (100 watts) receiver. Thanks.