Very impresses by PC Specialist. They offer a wide range of PC options and their customisation feature is very simple to use. Most importantly, it will actively warn you about purchasing components that are not compatible with the rest of your build. I consider this an essential part of the build process. Ordering was easy and the price of the system I picked was competitive compared to other sites. Build and delivery took less that 9 working days - well within the period I was expecting the PC. It was delivered safely and had been well secured for transit. Documentation that PC Specialist provide is also excellent. Overall, I would not hesitate to recommend this to someone purchasing a PC and would absolutely use them again.