wines for reception

[srf]

Our vegetarian reception menu includes bow tie pasta with two types of sauce, a fettucini mushroom and spicy red pepper. There will also be fruit, caesar salad and bread. We're planning to offer beer and wine. We are also planning to have berry pies, rather than a cake. Any suggestions for wine choices in the $7-15 range would be appreciated. Also, we will have 100 guests, so how many cases of wine would be appropriate?