Wine in a box? I think not.
I don't mind screw-tops at all, but I don't want my wine to be in contact with plastic.
While it's easy to find a good wine for a lot of money, I like the challenge of finding a decent, drinkable wine for under $10-12. Turns out, it's not that difficult, just gotta try things. I especially like cheap reds from the south of France, like Rhones, or cotes de provence, or languedoc. Very drinkable. Save the expensive wine for a special occasion.