I chose to go with PC Specialist because of the large availability of components to customise the build process. My expectations were surpassed. The cable tidy within the case and the general build is considerably better than I'd be able to do myself. It looks professional. I selected an expedited shipping option and the target for dispatch was met, so I was very happy about that. There's a note on a review below about the courier being problematic - I think that depends on your local service. DPD was used and for my local area they're extremely reliable, so I continued to be happy with that as well. I have been recommending PC Specialist to friends.