Vera's is a regular stop for me when I take my twice-monthly visit to West Side Market. As others have stated, there are a ton of great bakery options in the market so picking one is a very personal task. We've literally tried stuff from every single one of them and decided that Vera's is our place. We've never been disappointed with what we bought and the staff are friendlier than you come to expect at a place like this.
Naturally they have all your boring breads like everyone else but if you're brave and willing to venture out, there are some serious gems in the case - all of which are fresh and delicious. My personal favorites are the beer breads (especially the brown sugar cinnamon beer bread which is like a taste of baked heaven) and the basil, herb and cheese loaf. Great stuff!
Keep in mind that if you want to try some of their specialties, you need to go to the market on Friday or Saturday which are the busier market days. They only stock a lot of this stuff during the busy hours so go early (just not before I get there and grab my stock)!