I don't know why I haven't reviewed Opus yet--I go there probably every couple of weeks.\n\nAs a grad student, I basically limit myself to their Monday all-night happy hours, but if I were in a higher income bracket, I'd definitely go more often.  Yes, they're pricey.  But they're worth it.  I love their cocktails, both the fancy froufrou ones (for example: the Butter Up Kim--sounds horrible; peanuts in a drink?! but it is DELICIOUS; the Ryan's Baby--lemony delicious; the Cha Cha Cha, which matches my hair) and the very simple wines (which they have always obligingly let us sample before ordering) and my personal favorite: gin rickeys made with fresh-squeeze lime juice.\n\nI especially appreciate the attentive service that we have always received.  I generally go with other grad student types, and some places I get the feeling that staff don't feel we're worth their time, but that NEVER happens here.  The owner recognizes me--admittedly not hard with my hair--and she and the staff always take good care of us without being suffocating.  Last time I went, she had a headband I'd dropped there almost a month previously that they'd been hanging onto behind the bar for the next time I came in!\n\nI really enjoy the atmosphere.  I always like the music they're playing (once they played through the entire Massive Attack Mezzanine album; last time, it was something I didn't recognize but pleasantly reminiscent of mid-career David Bowie), and the seating is nice although I try to avoid the little stools at the low tables, preferring the benches.\n\nFinally, if you are looking for a good deal, you can't beat a 25% off \""martini flight\"" during happy hour.  Just ask before you order and they'll tell you what exactly you'll be getting.  It's a good way to sample new drinks and a LOT of alcohol for $12 regular price, $9 at happy hour!  Friend them on Facebook for additional special offers--last week they were doing a free drink after 8pm for fans.