Ed McCarthy, author of Champagne for Dummies, offers his picks of good champagnes in the $20 range and those worth the splurge at $60 and up.

Good champagnes in the $20 range:

Jacquesson (one of the great underrated houses)
Cattier
Piper-Heidsieck
Pol Roger

Champagnes worth the splurge at $60 and up:

Krug
Roederer Cristal
Bollinger
Gosset