I have spent $500+ at BevMo. I actually have a 10% coupon off my next entire order since I've ordered so much. But guess what... I go to TW&M now.
The way I figure it... TW&M has cheaper prices than BevMo and over time I will save money. Their selection is phenomenal. I think they have a bigger wine/champagne selection too, but I am not much of a winer drinker so I may not be the one to review this part of it.
I also am not a beer drinker... but I think they have a pretty kick ass beer selection. They even have a single-beer a la carte section from micro breweries. Pretty sweet huh?
Get here quick. The staff is knowledgeable too!