My vote is for the Sunset. I had the Bellevue and it was just too uncomfortable to carry. It was pretty roomy for the price though!
In the Sunset Blvd I can fit an LG Shine cell, mono cles with keys inside, credit cards, money/change, lip gloss and a small compact. If I want to carry more makeup for special occasions I just omit the cles and take my house key off the key ring.
If you do need a larger bag I'd suggest another fav of my the Roxbury. It can be dressed up or down as it can be worn as a large clutch or on the shoulder with the strap.