I have 2 favorite cheapies. The first is Louis Roederer. It goes for about $17. Rated 90 or 91 in Spectator.
The second is Gloria Ferrer. This is even cheaper at $13.
Rated the same as above; but tastes even better.
While these won't linger like Dom, for the price, you can't beat the taste.
Note, if I were with any of you, I'd be drinking
Lanson Black Label Brut $28. The NY Times and Wall Street Journal both raved about them.