my fav ~ $15 white that is extremely popular is santa margherita pinot grigio. haven't met a white wine drinker that didn't like it.
i almost exclusively drink red. like ronjohn55 said, there's thousand's of choices for that price. see if you can get a california red, from 1997 or 98. you may get lucky and find some still around.
the coppolla family of reds are very good, and a lot of people are into the whole name thing. their blue label merlot or claret is very good.
in nomine patri, et fili, et spiritus sancti.
beidh ar la linn.
wisdom is often in short supply within ones' ego.