I have used PrinterPix on several occasions in the past, and have found them very supportive and helpful in their dealings with their customers.
The products that I have purchased from them have, in the main, surpassed expectations, and I've found the PrinterPix website is intuitive and easy to use when designing Photobooks.
A special mention for Norah Jones in Customer Services Dept - she had been very helpful (despite me calling her Nora) and went the extra mile.
All in all a great company.