I decided to order from Cog Dog because their prices were reasonable - $20 for collar w/ tag holder, and I found fabrics I liked. Also because Nola's blog gave them a good review I decided it would be worth trying them. I am really happy with the collars! They are light weight, the fit all three of my dogs, they are adjustable, and I think the fabrics I picked out look great on them. To top it off, I ordered them on a Sunday, they were shipped on Thursday and arrived today. With other collars companies in the past it usually takes 10-14 days just for them to make my order.
Also, you'll notice they have new tags too! Seth's tag is a Fetching Tag that I bought last year. LiLo and Seppel's are from Aggie's Anvil. I ordered them Sunday night, she had them made by Monday morning, and I think I received them a day or two later. I was amazed at how quickly she had them done. Also price wise, these tags were $25 each, they are a really nice size, and I feel well worth the money for something that is totally customizable.
Overall I would recommend both companies - they have great customer service and were speedy with their products. I will definitely order from them again!