Product Design Interview review for Lulu Direct

I use Lulu xPress for about two years now. It worked well until several months ago and it became a disaster. Apparently there is 0 quality assurance made at the printing facilities. I have numerous copies of my book delivered with pages empty of content. The support is always helpful and sends a replacement, but in last several weeks I had several clients who received faulty product even on second and THIRD attempt. Unfortunately it damages my relationship, since I really look unprofessional when customer receives a faulty product, then the replacement arrives faulty again and the next one again. It also affects my income since I have to refund such customers. I asked for clarifications when such issues can be fixed but didn't receive concrete answers. If you have an alternative consider avoiding Lulu.