Have been meaning to have a distribution amp installed in the loft along with aerial (currently NTL only) for some months. Just called an installer who says regular coax is fine. Should I insist on CT100 for all runs and should I be concerned that he isn't concerned by not using it? It's £25 extra to use CT100 which is fine by me - I just want to make sure the install is quality and if he's prepared to use standard coax which may not be up to the job I am worried about the rest of the work. Anything else I ought to insist on in terms of aerial etc. Opinions appreciated.