I'm having a Wren Kitchen installed. Noticed that their own installer costs quite a bit more than if I were to employ independent ones. It seems that their package include a management service (designer + coordinator) and I'd be paying for peace of mind - in theory anyway. Though a read of threads on Mumsnet reveals that a lot of people do go independent. I'm assuming that the Wren units don't need any specialist knowledge to set up. What are the pros and cons, can anyone advise + share their experience?