I have to admit - I use WHCC for almost everything - prints, gallery wraps, cards, you name it. My prints are ALWAYS spot on! I've tried other vendors, some have been good, others have been blah with horrible colors from most.
I calibrate my monitor with the x-rite eye-one. Rarely do I have color issues with WHCC when I've properly calibrated before editing my images.
When I saw that Mpix Pro was offering custom CD cases, I decided to try them out. I'm going to be honest, I had ordered sample prints from Miller's in the past (Mpix's parent company) and I was not happy with the colors in both my corrected and uncorrected images I sent in. So I was very surprised when my test prints from Mpix Pro came back spot on. I decided to try out the custom CD cases for my digital collections. I just got in a CD case for a recent client order and I LOVE it! The best part is that you can design a custom cover for ever client order. Once I placed my order, I had my snazzy new case in about two days ... I love the quick turnaround too! To the left is a horrible photo I took with my Blackberry, but it gives you an idea of what the finished product looks like.
I'm trying out some new products from additional vendors right now. When those come in I'll let you know what I think!