I am using zoomin website from past 4-5 years. I never faced issue with the service or quality. When ever I want to make prints/photo book/mugs/magnets I prefer zoomin as they have nice coupons for discounts. Mainly I can say the photo books are awesome in zoomin, btw I never tried it another website though I liked it alot.
I gave my parents a wonderfull photo book for their marriage anniversery where they felt very much surprised and happy by seeing it. They way they finished the quality was awesome and it making me to write the review any way.
thanks team. You are awesome