I tried to buy a Pioneer DAB car radio/CD player from Halfords but after 15 minutes of searching, they informed me it was out of stock, despite it being on display. I noted the model number and went home to check it online. Caraudiocentre had it almost £40 cheaper and in stock! I called to check what else I needed and the young man who answered the phone was very helpful, checking my car make, model and year to advise on the required arial and ISO connector. I paid the extra £4.99 for next day delivery and it did indeed come the next day, albeit rather late in the day and I had to call to check that it was coming as I hadn't been sent an email to say it had been dispatched (that came two days after it arrived!). I have now had it fitted and discovered I didn't need the ISO connector. I am a bit disappointed to find I have to wait for the return/refund to be authorised but I hope this will happen.