My fiance and I got my e-ring from pop gems. They lady who helped us (her name is Kelli), she rocks. Some places will ask you what's your price range..here they asked us what kind of e-ring we are looking for (type, color, quality) and she brought our several loose diamonds for us to see and a whole case of setting to choose from.
Pros: Good quality diamonds, excellent customer service, good prices
Cons: it's located in downtown LA..so traffic and parking can be difficult but to me it's all worth it!