I must say first, that I am not the biggest fan of Britneys. Often her voice, unless controlled can be too nasal sounding and 'effected'.
HOWEVER, this really is an outstanding greatest hits package, jam packed with dance floor fillers (such as 'Toxic', 'Stronger' and 'Crazy'), perfect pop ('Oops! I Did It Again', 'Born To Make You Happy' and the iconic 'Baby One More Time'), at times sexy (as in the Prince-ish 'I'm A Slave 4 U' and 'Boys') and gorgeous ballads ('Don't Let Me Be The Last To Know', 'Sometimes' and 'Everytime'). This cd also includes a duet with Madonna, the dance floor hit 'Me Against The Music' - Madonna's only single duet in her 21 year career, quite a coup for Britney. With a couple of new hits to, the best of which is an electro-pop cover of Bobby Browns early 90's hit 'My Prerogative'. The only weak moments for me are 'I Love Rock 'N' Roll', which to be honest isn't bad, just not worthy of inclusion, and the pleasant 'I'm Not A Girl, Not Yet A Woman' (which was co-written with Dido, though she remains un-credited). As for 'Lucky' this really is one of the most saccharine sweet pieces of pop I've ever heard, however, I can't help enjoying it.
This really is an excellent hits package, and one that must make fans of hers long to see what she will do next.